On the day of Pentecost, Peter, standing up with the other eleven apostles, preached to the Jews that had gathered, “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.”

When did Peter and the eleven apostles get baptized in Jesus name, and who baptized them?

Jesus baptized. A few verses after John 3:16, and after John 3:5 where Jesus also told Nicodemus “Except a man be born of water and of the Spirit, he cannot enter into the kingdom of God,” the Bible tells us that Jesus baptized.

John 3:22 “After these things came Jesus and his disciples into the land of Judaea; and there he tarried with them, and baptized.”

Some of John the Baptist’s disciples came to John, questioning him. John’s disciples apparently were concerned because after John the Baptist baptized Jesus, Jesus’ ministry began growing faster than John’s. Jesus was baptizing.

John 3:26 “And they came unto John, and said unto him, Rabbi, he that was with thee beyond Jordan, to whom thou barest witness, behold, the same baptizeth, and all men come to him.”

Jesus’ disciples also baptized, most likely taking over baptizing after Jesus baptized them.

John 4:1-3 “When therefore the Lord knew how the Pharisees had heard that Jesus made and baptized more disciples than John, (though Jesus himself baptized not, but his disciples,) he left Judaea, and departed again into Galilee.”

Thus, on the day of Pentecost, all the disciples of Jesus gathered in the upper room waiting for the promise of the Holy Ghost were already baptized in Jesus name. There were probably about a hundred and twenty disciples all together (Acts 1:15).

After Peter preached the gospel message, the Bible says about three thousand were baptized and ADDED to the disciples.

Acts 2:41 “Then they that gladly received his word were baptized: and the same day there were added unto them about three thousand souls.”

Acts 2:47 “… And the Lord added to the church daily such as should be saved.”