Being baptised was one of the conditions of salvation taught by Christ’s authorised messengers in the first century.

• Peter said, “Repent and be baptised every one of you” (Acts 2:38).
• “He (Peter) commanded them to be baptised in the name of the Lord” (Acts 10:48).
• “He that believes and is baptised shall be saved” (Mark 16:16).

All believers of the gospel as preached by the apostles at the first, were baptised.

• “Then they that gladly received his (Peter’s) words were baptised” (Acts 2:41).
• “And many of the Corinthians hearing believed and were baptised” (Acts 18:8).
• “And when they believed Philip… they were baptised, both men and women” (Acts 8:12).
• Philip baptised the eunuch (Acts 8:38).
• Lydia was baptised, and her household (Acts 16:15).
• The keeper of the prison was baptised, “he and all his, straightway” (Acts 16:34).
• “When they (twelve men at Ephesus) heard this, they were baptised in the name of the Lord Jesus” (Acts 19:5).

Baptism is the divinely appointed ordinance for introducing believing sinners “into Christ”.

• “In Adam all die” (1 Corinthians 15:22).
• “At that time ye were without Christ … having no hope and without God in the world” (Ephesians 2:12).
• Gentiles “alienated from the life of God” (Ephesians 4:18).
• “All have sinned” (Romans 3:23).
• “The wages of sin is death” (Romans 6:23).
• “But now in Christ Jesus, ye who sometimes were far off are made nigh” (Ephesians 2:13).

Christ and the apostles were baptised.

• Jesus was baptised of John in the Jordan (Mark 1:9).
• Paul “arose, and was baptised” (Acts 9:18).
• Some of the disciples of John the Baptist followed Jesus and became the apostles (see John 1:35-37).

In baptism, we obtain the forgiveness of our sins.

• “Be baptised … for the remission of your sins” (Acts 2:38).
• “Be baptised and wash away thy sins” (Acts 22:16).
• “Baptism doth also now save us, not the putting away of the filth of the flesh, but the answer of a good conscience” (1 Peter 3.21).
• “Purged from his own sins” (2 Peter 1:9)
• “The washing of water by the word” (Ephesians 5:26).

Baptism is an action requiring the use of water.

• “See, here is water; what hinders me from being baptised?” (Acts 8:36).
• “Can any man forbid water that these should not be baptised?” (Acts 10:47).
• “John was baptising in Aenon near to Salim, because there was much water there” (John 3:23).

Baptism involves being buried or immersed in water.

• “We are buried with him by baptism into death … planted together in the likeness of his death” (Romans 6:3-5).
• “Buried with him in baptism, wherein also ye are risen with him” (Colossians 2:12).
• “Born of water” (John 3:5).
• Submitting to baptism is part of our conforming to the ordinances and appointments of God.  It is part of doing the will of God.  Jesus said, “whoever does the will of my Father in heaven is my brother and sister and mother” (Matthew 12:50).

 (from a Christadelphian Bible Finger Post)