Were the apostles baptized?
They were undoubtedly baptized for several reasons. Some of them, such as Andrew and John, had been John the Baptist’s disciples before they came to Jesus (John 1:35-42). They would have therefore been baptized with John’s baptism which was associated with repentance and for forgiveness of sins (Mark 1:4). The apostles, after they had become Jesus’ disciples, had also been baptizing when John had been baptizing (John 4:1-2), so they would have been baptized too to set the proper example. Plus, Jesus had been baptized by John in order to fulfill all righteousness (Matt. 3:14-15). Thus, His disciples would have also been baptized to follow His example (Luke 6:40).
However, John’s baptism was made invalid upon Christ’s command to make disciples and baptize them in the name of the Father, Son, and Holy Spirit (Matt. 28:19-20). We know this because after the church began Apollos and John’s disciples, who were only familiar with John’s baptism, had to have had God’s Word explained to them more accurately and were baptized in Jesus’ name (Acts 18:24-26; 19:1-5). After Jesus’ death and resurrection, and upon His command to be baptized into Christ for the forgiveness of sins, it is clear that all – including the apostles – would have had to have been baptized with the “one baptism” into His death so they could be raised as He was (Mark 16:15-16; Rom. 6:3-5; Gal. 3:26-27; Eph. 4:5; 1 Cor. 12:13).
Thus, we can be certain that the apostles were baptized into Christ just like every other Christian, most likely on or shortly before the day of Pentecost (Acts 2:41).