Ten days following Jesus Christ return to heaven to take His place at the right hand of God our Father, those He had ordained and sent ( apostles ) and His followers assembled to keep the Feast of Firstfruits (Pentecost [ Greek word meaning fiftieth ]) and they were baptized with the Holy Spirit of God ( the beginning the Church of God ). Peter and the apostles began to prophecy about the Kingdom of God ( “… the wonderful works of God.“) to a large group of Jews from various nations and languages.
Acts 2:1-13 (NASB)
And when the day of Pentecost had come, they were all together in one place.  And suddenly there came from heaven a noise like a violent, rushing wind, and it filled the whole house where they were sitting.  And there appeared to them tongues as of fire distributing themselves, and they rested on each one of them.  And they were all filled with the Holy Spirit and began to speak with other tongues, as the Spirit was giving them utterance.  Now there were Jews living in Jerusalem, devout men, from every nation under heaven.  And when this sound occurred, the multitude came together, and were bewildered, because they were each one hearing them speak in his own language.  And they were amazed and marveled, saying, “Why, are not all these who are speaking Galileans?  “And how is it that we each hear them in our own language to which we were born?  “Parthians and Medes and Elamites, and residents of Mesopotamia, Judea and Cappadocia, Pontus and Asia,  Phrygia and Pamphylia, Egypt and the districts of Libya around Cyrene, and visitors from Rome, both Jews and proselytes,  Cretans and Arabs– we hear them in our own tongues speaking of the mighty deeds of God.”  And they all continued in amazement and great perplexity, saying to one another, “What does this mean?”  But others were mocking and saying, “They are full of sweet wine.”
Peter was speaking to the “Men of Judea, and all you who live in Jerusalem …” . He explains that what they are seeing is the gift of the Holy Spirit, and then teaches about Jesus Christ, His death and resurrection.
Acts 2:14-36 (NASB)
But Peter, taking his stand with the eleven, raised his voice and declared to them: “Men of Judea, and all you who live in Jerusalem, let this be known to you, and give heed to my words.  “For these men are not drunk, as you suppose, for it is only the third hour of the day;  but this is what was spoken of through the prophet Joel:
 ‘And it shall be in the last days,’ God says,
‘That I will pour forth of My Spirit upon all MANKIND;
And your sons and your daughters shall prophesy,
And your young men shall see visions,
And your old men shall dream dreams;
 Even upon My bondslaves, both men and women,
I will in those days pour forth of My Spirit
And they shall prophesy.
 ‘And I will grant wonders in the sky above,
And signs on the earth beneath,
Blood, and fire, and vapor of smoke.
 ‘The sun shall be turned into darkness,
And the moon into blood,
Before the great and glorious day of the Lord shall come.
 ‘And it shall be, that EVERYONE WHO CALLS ON THE NAME OF THE Lord shall be saved.’
 “Men of Israel, listen to these words: Jesus the Nazarene, a man attested to you by God with miracles and wonders and signs which God performed through Him in your midst, just as you yourselves know–  this Man, delivered up by the predetermined plan and foreknowledge of God, you nailed to a cross by the hands of godless men and put Him to death.  “And God raised Him up again, putting an end to the agony of death, since it was impossible for Him to be held in its power.  “For David says of Him,
‘I was always beholding the Lord in my presence;
For He is at my right hand, that I may not be shaken.
 ‘Therefore my heart was glad and my tongue exulted;
Moreover my flesh also will abide in hope;
 Because Thou wilt not abandon my soul to Hades,
Nor ALLOW Thy Holy One to UNDERGO DECAY.
 ‘Thou hast made known to me the ways of life;
Thou wilt make me full of gladness with Thy presence.’
 “Brethren, I may confidently say to you regarding the patriarch David that he both died and was buried, and his tomb is with us to this day.  “And so, because he was a prophet, and knew that God had sworn to him with an oath to seat one of his descendants upon his throne,  he looked ahead and spoke of the resurrection of the Christ, that He was neither abandoned to Hades, nor did His flesh suffer decay.  “This Jesus God raised up again, to which we are all witnesses.  “Therefore having been exalted to the right hand of God, and having received from the Father the promise of the Holy Spirit, He has poured forth this which you both see and hear.  “For it was not David who ascended into heaven, but he himself says:
‘The Lord said to my Lord,
“Sit at My right hand,
 Until I make Thine enemies a footstool for Thy feet.” ‘
 “Therefore let all the house of Israel know for certain that God has made Him both Lord and Christ– this Jesus whom you crucified.”
Notice the effect their prophesying ( preaching ).
Acts 2:37 (NASB)
Now when they heard this, they were pierced* to the heart, and said to Peter and the rest of the apostles, “Brethren**, what shall we do?”
NASB, margin notes:
*Or, smitten in conscience
**Lit., Men brothers
Peter instructs them about what they must do.
Acts 2:38-40 (KJV)
Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost.  For the promise is unto you, and to your children, and to all that are afar off, even as many as the Lord our God shall call.  And with many other words did he testify and exhort, saying, Save yourselves from this untoward generation.
This is the beginning of the Church of God.
The example “…Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost (Spirit).” (KJV) is the same way a person becomes a member of the body of Jesus Christ, the Church of God today.
The Word of God [ the Holy Bible ] teaches a person how to live God’s way of living. Jesus Christ defined truth while praying to His Father.
John 17:17 (NASB)
“Sanctify them in the truth; Thy word is truth.
The apostle Paul confirms:
2 Tim. 3:16-17 (KJV)
All scripture is given by inspiration of God, and is profitable for doctrine, for reproof, for correction, for instruction in righteousness:  That the man of God may be perfect, thoroughly furnished unto all good works.
“… Repent …“: We are taught about repentance from God’s Word.
Acts 3:19 (KJV)
Repent* ye therefore, and be converted, that your sins may be blotted out, when the times of refreshing shall come from the presence of the Lord;
* Strong’s Exhaustive Concordance:
metanoeo, Greek 3340, : metanoeo,
met-an-o-eh’-o; from Greek 3326 (meta) and Greek 3539 (noieo); to think differently or afterwards, i.e. reconsider (moral feel compunction) :- repent.
Acts 26:19-20 (NASB)
“Consequently, King Agrippa, I did not prove disobedient to the heavenly vision,  but kept declaring both to those of Damascus first, and also at Jerusalem and then throughout all the region of Judea, and even to the Gentiles, that they should repent and turn to God, performing deeds appropriate to repentance.
Luke 3:7-8 (NASB)
He therefore began saying to the multitudes who were going out to be baptized by him, “You brood of vipers, who warned you to flee from the wrath to come?  “Therefore bring forth fruits in keeping with repentance, and do not begin to say to yourselves, ‘We have Abraham for our father,’ for I say to you that God is able from these stones to raise up children to Abraham.
Repentance and deeds (fruit) appropriate to repentance is defined.
Isaiah 55:6-11 (KJV)
Seek ye the Lord while he may be found, call ye upon him while he is near:  Let the wicked forsake his way, and the unrighteous man his thoughts: and let him return unto the Lord, and he will have mercy upon him; and to our God, for he will abundantly pardon.  For my thoughts are not your thoughts, neither are your ways my ways, saith the Lord.  For as the heavens are higher than the earth, so are my ways higher than your ways, and my thoughts than your thoughts.  For as the rain cometh down, and the snow from heaven, and returneth not thither, but watereth the earth, and maketh it bring forth and bud, that it may give seed to the sower, and bread to the eater:
 So shall my word be that goeth forth out of my mouth: it shall not return unto me void, but it shall accomplish that which I please, and it shall prosper in the thing whereto I sent it.
Ezekiel 18:19-32 (NASB)
“Yet you say, ‘Why should the son not bear the punishment for the father’s iniquity?’ When the son has practiced justice and righteousness, and has observed all My statutes and done them, he shall surely live.  “The person who sins will die. The son will not bear the punishment for the father’s iniquity, nor will the father bear the punishment for the son’s iniquity; the righteousness of the righteous will be upon himself, and the wickedness of the wicked will be upon himself.  “But if the wicked man turns from all his sins which he has committed and observes all My statutes and practices justice and righteousness, he shall surely live; he shall not die.  “All his transgressions which he has committed will not be remembered against him; because of his righteousness which he has practiced, he will live.  “Do I have any pleasure in the death of the wicked,” declares the Lord God, “rather than that he should turn from his ways and live?  “But when a righteous man turns away from his righteousness, commits iniquity, and does according to all the abominations that a wicked man does, will he live? All his righteous deeds which he has done will not be remembered for his treachery which he has committed and his sin which he has committed; for them he will die.  “Yet you say, ‘The way of the Lord is not right.’ Hear now, O house of Israel! Is My way not right? Is it not your ways that are not right?  “When a righteous man turns away from his righteousness, commits iniquity, and dies because of it, for his iniquity which he has committed he will die.  “Again, when a wicked man turns away from his wickedness which he has committed and practices justice and righteousness, he will save his life.  “Therefore I will judge you, O house of Israel, each according to his conduct,” declares the Lord God. “Repent and turn away from all your transgressions, so that iniquity may not become a stumbling block to you.  “Cast away from you all your transgressions which you have committed, and make yourselves a new heart and a new spirit! For why will you die, O house of Israel?  “For I have no pleasure in the death of anyone who dies,” declares the Lord God. “Therefore, repent and live.”
The act of repenting is when we change our mind and way of life of sin and transgression and seek to live according to the God and His righteousness ( right way of living ).
The truth as revealed in God’s Word makes known to us that we are drawn to repentance by ” … the goodness of God …“.
Romans 2:4 (NASB)
Or do you think lightly of the riches of His kindness and forbearance and patience, not knowing that the kindness of God leads you to repentance?
We are drawn by God to repenting of sin and transgression, but what is sin?
1 John 3:4 (KJV)
Whosoever committeth sin transgresseth also the law: for sin is the transgression of the law.
1 John 3:4 (NASB)
Everyone who practices sin also practices lawlessness; and sin is lawlessness.
When we repent we ask God to forgive our sin and we take action to stop transgressing (breaking) His law.
“ … and be baptized …”
There are two specific examples of the act of being baptized in the Bible.
1. The example of Jesus Christ.
Matthew 3:13-17 (NASB)
Then Jesus arrived from Galilee at the Jordan coming to John, to be baptized by him.  But John tried to prevent Him, saying, “I have need to be baptized by You, and do You come to me?”  But Jesus answering said to him, “Permit it at this time; for in this way it is fitting for us to fulfill all righteousness.” Then he permitted Him.  And after being baptized, Jesus went up immediately from the water; and behold, the heavens were opened, and he saw the Spirit of God descending as a dove, and coming upon Him,  and behold, a voice out of the heavens, saying, “This is My beloved Son, in whom I am well-pleased.”
Mark 1:9-10 (NASB)
And it came about in those days that Jesus came from Nazareth in Galilee, and was baptized by John in the Jordan.  And immediately coming up out of the water, He saw the heavens opening, and the Spirit like a dove descending upon Him;
2. Philip baptizing the Ethiopian eunuch.
Acts 8:36-39 (NASB)
And as they went along the road they came to some water; and the eunuch said, “Look! Water! What prevents me from being baptized?”  [And Philip said, “If you believe with all your heart, you may.” And he answered and said, “I believe that Jesus Christ is the Son of God.”]  And he ordered the chariot to stop; and they both went down into the water, Philip as well as the eunuch; and he baptized him.  And when they came up out of the water, the Spirit of the Lord snatched Philip away; and the eunuch saw him no more, but went on his way rejoicing.
NASB, margin note:
Many manuscripts do not contain verse 37
Notice the act of baptizing is performed in the water. The apostle Paul compares baptism to dying and being buried.
Romans 6:1-4 (NASB)
What shall we say then? Are we to continue in sin that grace might increase?  May it never be! How shall we who died to sin still live in it?  Or do you not know that all of us who have been baptized into Christ Jesus have been baptized into His death?  Therefore we have been buried with Him through baptism into death, in order that as Christ was raised from the dead through the glory of the Father, so we too might walk in newness of life.
“… in the name of Jesus ( Joshua ) Christ ( Messiah- Anointed ) for the remission of sins …”
We must understand and accept the certainty that there is one name spoken in which someone is to be baptized! This is the only name by which we receive salvation.
Acts 4:10-12 (NASB)
let it be known to all of you, and to all the people of Israel, that by the name of Jesus Christ the Nazarene, whom you crucified, whom God raised from the dead– by this name this man stands here before you in good health.  “He is the stone which was REJECTED by you, the builders, but which became the very corner stone.  “And there is salvation in no one else; for there is no other name under heaven that has been given among men, by which we must be saved.”
Philip. 2:9-10 (NASB)
Therefore also God highly exalted Him, and bestowed on Him the name which is above every name,  that at the name of Jesus every knee should bow, of those who are in heaven, and on earth, and under the earth,
When someone is baptized they are buried by water in the name of Joshua (Jesus) Messiah (Christ – Anointed) and come up out of the water a new person, cleansed from all sins ever committed. Jesus is an English word translated from the Greek word Iesous.
The Greek word Iesous is equivalent to the Hebrew word Yehoshua which translated into English is Joshua. The name means “LORD saved” or “the LORD is salvation“. Jesus’ parents were Jewish and gave Him the Hebrew name Joshua. The language He learned as a Child in Nazareth, Galilee was Aramaic. Aramaic is a combination of Hebrew and Chaldee. Being baptized in the name of Joshua Messiah is the same being baptized in the name Jesus Christ.
Isaiah 1:18 (NASB)
“Come now, and let us reason together,” Says the Lord,
“Though your sins are as scarlet,
They will be as white as snow;
Though they are red like crimson,
They will be like wool.
“… and you shall receive the gift of the Holy Spirit.”
Acts 2:39 (NASB)
“For the promise is for you and your children, and for all who are far off, as many as the Lord our God shall call to Himself.”
The promise is sure to those who repent, and are baptized in the name of Jesus Christ. They are able to receive the life-giving power of God, the Holy Spirit.
When a person repents and is baptized in the name of Jesus Christ for the remission ( forgiveness ) of sins. He or she has been cleansed of all sins and is a new being ready to receive the Holy Spirit. Then the individual receives the Holy Spirit by the laying on of hands, and by prayer for the fulfillment of the promised Holy Spirit of God
( the Father and Jesus Christ ).
Acts 19:5-6 (NASB)
And when they heard this, they were baptized in the name of the Lord Jesus.  And when Paul had laid his hands upon them, the Holy Spirit came on them, and they began speaking with tongues and prophesying.
Acts 8:14-17 (NASB)
Now when the apostles in Jerusalem heard that Samaria had received the word of God, they sent them Peter and John,  who came down and prayed for them, that they might receive the Holy Spirit.  For He had not yet fallen upon any of them; they had simply been baptized in the name of the Lord Jesus.  Then they began laying their hands on them, and they were receiving the Holy Spirit.
Jesus taught His apostles, disciples, and us about the gift of the Holy Spirit.
John 14:15-26 (NASB)
“If you love Me, you will keep My commandments.  “And I will ask the Father, and He will give you another Helper, that He may be with you forever;  that is the Spirit of truth, whom the world cannot receive, because it does not behold Him or know Him, but you know Him because He abides with you, and will be in you.  “I will not leave you as orphans; I will come to you.  “After a little while the world will behold Me no more; but you will behold Me; because I live, you shall live also.  “In that day you shall know that I am in My Father, and you in Me, and I in you.  “He who has My commandments and keeps them, he it is who loves Me; and he who loves Me shall be loved by My Father, and I will love him, and will disclose Myself to him.”  Judas (not Iscariot) said to Him, “Lord, what then has happened that You are going to disclose Yourself to us, and not to the world?”  Jesus answered and said to him, “If anyone loves Me, he will keep My word; and My Father will love him, and We will come to him, and make Our abode with him.  “He who does not love Me does not keep My words; and the word which you hear is not Mine, but the Father’s who sent Me.  “These things I have spoken to you, while abiding with you.  “But the Helper, the Holy Spirit, whom the Father will send in My name, He will teach you all things, and bring to your remembrance all that I said to you.
John 16:13-14 (NASB)
“But when He, the Spirit of truth, comes, He will guide you into all the truth; for He will not speak on His own initiative, but whatever He hears, He will speak; and He will disclose to you what is to come.  “He shall glorify Me; for He shall take of Mine, and shall disclose it to you.
John also spoke of the Gift of the Holy Spirit in a letter to the Church.
1 John 2:20-27 (NASB)
But you have an anointing from the Holy One, and *you all know.
 I have not written to you because you do not know the truth, but because you do know it, and because no lie is of the truth.  Who is the liar but the one who denies that Jesus is the Christ? This is the antichrist, the one who denies the Father and the Son.  Whoever denies the Son does not have the Father; the one who confesses the Son has the Father also.  As for you, let that abide in you which you heard from the beginning. If what you heard from the beginning abides in you, you also will abide in the Son and in the Father.  And this is the promise which He Himself made to us: eternal life.  These things I have written to you concerning those who are trying to deceive you.  And as for you, the anointing which you received from Him abides in you, and you have no need for anyone to teach you; but as His anointing teaches you about all things, and is true and is not a lie, and just as it has taught you, you abide in Him.
NASB, margin notes:
* Some ancient manuscripts read “you know all things”.
The Holy Spirit is of Jesus Christ and the Father and is the uniting power of God.
A short time before Jesus was crucified He prayed to His Father about this power.
John 17:1 (NASB)
These things Jesus spoke; and lifting up His eyes to heaven, He said, “Father, the hour has come; glorify Thy Son, that the Son may glorify Thee,
John 17:11 (NASB)
“And I am no more in the world; and yet they themselves are in the world, and I come to Thee. Holy Father, keep them in Thy name, the name which Thou hast given Me, that they may be one, even as We are.
He even prayed for us during His prayer.
John 17:20-26 (NASB)
“I do not ask in behalf of these alone, but for those also who believe in Me through their word;  that they may all be one; even as Thou, Father, art in Me, and I in Thee, that they also may be in Us; that the world may believe that Thou didst send Me.  “And the glory which Thou hast given Me I have given to them; that they may be one, just as We are one;  I in them, and Thou in Me, that they may be perfected in unity, that the world may know that Thou didst send Me, and didst love them, even as Thou didst love Me.  “Father, I desire that they also, whom Thou hast given Me, be with Me where I am, in order that they may behold My glory, which Thou hast given Me; for Thou didst love Me before the foundation of the world.  “O righteous Father, although the world has not known Thee, yet I have known Thee; and these have known that Thou didst send Me;  and I have made Thy name known to them, and will make it known; that the love wherewith Thou didst love Me may be in them, and I in them.”
The Holy Spirit is the power of God!
John 10:30 (NASB)
“I and the Father are one.”
1 John 2:22 (NASB)
Who is the liar but the one who denies that Jesus is the Christ? This is the antichrist, the one who denies the Father and the Son.
Jesus Christ was born by this Power!
Luke 1:26 (NASB)
Now in the sixth month the angel Gabriel was sent from God to a city in Galilee, called Nazareth,
Luke 1:30-35 (NASB)
And the angel said to her, “Do not be afraid, Mary; for you have found favor with God.  “And behold, you will conceive in your womb, and bear a son, and you shall name Him Jesus.  “He will be great, and will be called the Son of the Most High; and the Lord God will give Him the throne of His father David;  and He will reign over the house of Jacob forever; and His kingdom will have no end.”  And Mary said to the angel, “How can this be, since I am a virgin?”  And the angel answered and said to her, “The Holy Spirit will come upon you, and the power of the Most High will overshadow you; and for that reason the holy offspring shall be called the Son of God.
Jesus healed by this Power of the Holy Spirit.
Luke 8:43-48 (NASB)
And a woman who had a hemorrhage for twelve years, and could not be healed by anyone,  came up behind Him, and touched the fringe of His cloak; and immediately her hemorrhage stopped.  And Jesus said, “Who is the one who touched Me?” And while they were all denying it, Peter said, “Master, the multitudes are crowding and pressing upon You.”  But Jesus said, “Someone did touch Me, for I was aware that power had gone out of Me.”  And when the woman saw that she had not escaped notice, she came trembling and fell down before Him, and declared in the presence of all the people the reason why she had touched Him, and how she had been immediately healed.  And He said to her, “Daughter, your faith has made you well; go in peace.”
Luke 6:19 (NASB)
And all the multitude were trying to touch Him, for power was coming from Him and healing them all.
Joshua (Jesus) instructed His disciples to remain in Jerusalem until they received the Power of God’s Holy Spirit.
Luke 24:49 (NASB)
“And behold, I am sending forth the promise of My Father upon you; but you are to stay in the city until you are clothed with power from on high.”
Acts 1:4-5 (NASB)
And gathering them together, He commanded them not to leave Jerusalem, but to wait for what the Father had promised, “Which,” He said, “you heard of from Me;  for John baptized with water, but you shall be baptized with the Holy Spirit not many days from now.”
Acts 1:8 (NASB)
but you shall receive power when the Holy Spirit has come upon you; and you shall be My witnesses both in Jerusalem, and in all Judea and Samaria, and even to the remotest part of the earth.”
It is by this Power we are given the Gift of God to eternal life.
Romans 6:23 (KJV)
For the wages of sin is death; but the gift of God is eternal life through Jesus Christ our Lord.
Romans 6:1-6 (NASB)
What shall we say then? Are we to continue in sin that grace might increase?  May it never be! How shall we who died to sin still live in it?  Or do you not know that all of us who have been baptized into Christ Jesus have been baptized into His death?  Therefore we have been buried with Him through baptism into death, in order that as Christ was raised from the dead through the glory of the Father, so we too might walk in newness of life.  For if we have become united with Him in the likeness of His death, certainly we shall be also in the likeness of His resurrection,  knowing this, that our old self was crucified with Him, that our body of sin might be done away with, that we should no longer be slaves to sin;
Romans 8:9-17 (NASB)
However, you are not in the flesh but in the Spirit, if indeed the Spirit of God dwells in you. But if anyone does not have the Spirit of Christ, he does not belong to Him.  And if Christ is in you, though the body is dead because of sin, yet the spirit is alive because of righteousness.  But if the Spirit of Him who raised Jesus from the dead dwells in you, He who raised Christ Jesus from the dead will also give life to your mortal bodies through His Spirit who indwells you.  So then, brethren, we are under obligation, not to the flesh, to live according to the flesh–  for if you are living according to the flesh, you must die; but if by the Spirit you are putting to death the deeds of the body, you will live.  For all who are being led by the Spirit of God, these are sons of God.  For you have not received a spirit of slavery leading to fear again, but you have received a spirit of adoption as sons by which we cry out, “Abba! Father!”  The Spirit Himself bears witness with our spirit that we are children of God,  and if children, heirs also, heirs of God and fellow heirs with Christ, if indeed we suffer with Him in order that we may also be glorified with Him.
Those attracted by “… the goodness of God” to repentance pursue a life striving to obey God and seeking, by learning from His Word, the right way of living. They make known to God deeds revealing repentance. Then he or she is buried under water in baptism in the name of Joshua (Jesus) Messiah (Christ – Anointed) for the forgiveness (remission) of sins and coming up out of the water a new person entirely clean of all sins and prepared for the gift of the Holy Spirit of God. Then acting in faith, he or she have hands laid on them and a prayer is made thanking God through Jesus Christ for fulfilling the promise of the gift of His Holy Spirit. Implanted with the Holy Spirit the individual then begins a new life as a child of God our Father and brother or sister of our Savior Jesus Christ!