Hidden In Him
Well-Known Member
I don't think it took that long. As @justbyfaith pointed out, Peter was preaching the gospel of grace in Acts 10, and in Acts 2:38 it also says that he was preaching being baptized in the name of Jesus Christ for the remission of sins.
36 “Therefore let all the house of Israel know assuredly that God has made this Jesus, whom you crucified, both Lord and Christ.” 37 Now when they heard this, they were cut to the heart, and said to Peter and the rest of the apostles, “Men and brethren, what shall we do?” 38 Then Peter said to them, “Repent, and let every one of you be baptized in the name of Jesus Christ for the remission of sins; and you shall receive the gift of the Holy Spirit.
I forgot to mention it @GodsGrace, but Peter spoke the above words on the Day of Pentecost, 50 some odd days removed from the time of the resurrection.