The Apostles doctrine is three core aspects of Christian initiation teaching (1) repentance, (2) baptism in Jesus name for the remission of sins, and (3) the gift of the Holy Spirit as expressed in Acts 2:38. The Apostles Doctrine pertains to what the Apostles taught as the normative process becoming part of the body of Christ.
Key Scriptural References:
Acts 2:36-42 (ESV) – Apostles Doctrine
Let all the house of Israel therefore know for certain that God has made him both Lord and Christ, this Jesus whom you crucified.” Now when they heard this they were cut to the heart, and said to Peter and the rest of the apostles, “Brothers, what shall we do?” And Peter said to them, “Repent and be baptized every one of you in the name of Jesus Christ for the forgiveness of your sins, and you will receive the gift of the Holy Spirit. For the promise is for you and for your children and for all who are far off, everyone whom the Lord our God calls to himself.” And with many other words he bore witness and continued to exhort them, saying, “Save yourselves from this crooked generation.” So those who received his word were baptized, and there were added that day about three thousand souls. And they devoted themselves to the apostles’ teaching and the fellowship, to the breaking of bread and the prayers.
Acts 8:12-17 (ESV) – Apostles Doctrine
But when they believed Philip as he preached good news about the kingdom of God and the name of Jesus Christ, they were baptized, both men and women. Even Simon himself believed, and after being baptized he continued with Philip. And seeing signs and great miracles performed, he was amazed. Now when the apostles at Jerusalem heard that Samaria had received the word of God, they sent to them Peter and John, who came down and prayed for them that they might receive the Holy Spirit, for he had not yet fallen on any of them, but they had only been baptized in the name of the Lord Jesus. Then they laid their hands on them and they received the Holy Spirit.
Acts 10:44-48 (ESV) – Apostles Doctrine
While Peter was still saying these things, the Holy Spirit fell on all who heard the word. And the believers from among the circumcised who had come with Peter were amazed, because the gift of the Holy Spirit was poured out even on the Gentiles. For they were hearing them speaking in tongues and extolling God. Then Peter declared, “Can anyone withhold water for baptizing these people, who have received the Holy Spirit just as we have?” And he commanded them to be baptized in the name of Jesus Christ…
Acts 19:2-7 (ESV) – Apostles Doctrine
And he said to them, “Did you receive the Holy Spirit when you believed?” And they said, “No, we have not even heard that there is a Holy Spirit.” And he said, “Into what then were you baptized?” They said, “Into John’s baptism.” And Paul said, “John baptized with the baptism of repentance, telling the people to believe in the one who was to come after him, that is, Jesus.” On hearing this, they were baptized in the name of the Lord Jesus. And when Paul had laid his hands on them, the Holy Spirit came on them, and they began speaking in tongues and prophesying. There were about twelve men in all.
Romans 6:2-4 (ESV) – Apostles Doctrine
How can we who died to sin still live in it? you not know that all of us who have been baptized into Christ Jesus were baptized into his death? We were buried therefore with him by baptism into death, in order that, just as Christ was raised from the dead by the glory of the Father, we too might walk in newness of life.
1 Corinthians 15:1-4 (ESV)
Now I would remind you, brothers, of the gospel I preached to you, which you received, in which you stand, and by which you are being saved, if you hold fast to the word I preached to you—unless you believed in vain. For I delivered to you as of first importance what I also received: that Christ died for our sins in accordance with the Scriptures, that he was buried, that he was raised on the third day in accordance with the Scriptures
Colossians 2:11-14 (ESV) – Apostles Doctrine
“In him also you were circumcised with a circumcision made without hands, by putting off the body of the flesh, by the circumcision of Christ, having been buried with him in baptism, in which you were also raised with him through faith in the powerful working of God, who raised him from the dead. And you, who were dead in your trespasses and the uncircumcision of your flesh, God made alive together with him, having forgiven us all our trespasses, by canceling the record of debt that stood against us with its legal demands. This he set aside, nailing it to the cross.”
Hebrews 6:1-8 (Aramaic Peshitta, Lamsa) – Apostles Doctrine
“Because of this, we should leave the starting point of the word of Christ and we should come to maturity. Or will you again lay another foundation for repentance from dead works and for the faith that is in God and for the doctrine of baptism and of the laying on of hands and for the resurrection from the dead and for eternal judgement? If the LORD permits, we will do this. But they are not able, those who once have gone down into baptism and have tasted the gift that is from heaven and have received the Holy Spirit and have tasted the good word of God and the power of the age that is to come, to sin again and to be renewed to repentance from the beginning and to crucify to disparage the Son of God from the beginning. For the earth, which drinks the rain that comes to it many times and produces the green herb that is useful to those because of whom it was cultivated, receives a blessing from God. But if it produces thorn and thistles, it is rejected and is not far away from a curse, but rather its end is fire.