Contradiction with Matthew 28:19
Acts 8:36 mentions immediate baptism upon belief, while Matthew 28:19 emphasizes baptizing in the context of a command with instructions on teaching.
Matthew 28:19: Go ye therefore, and teach all nations, baptizing them in the name of the Father, and of the Son, and of the Holy Ghost: [teach...: or, make disciples, or, Christians of all nations]
Contradiction with Mark 16:16
Acts 8:36 implies baptism immediately after belief, whereas Mark 16:16 suggests belief and baptism together lead to salvation but does not emphasize immediacy.
Mark 16:16: He that believeth and is baptized shall be saved; but he that believeth not shall be damned.
Contradiction with John 3:5
Acts 8:36 highlights the act of baptism quickly following belief, while John 3:5 indicates being "born of water and of the Spirit" without a direct link to immediacy after belief.
John 3:5: Jesus answered, Verily, verily, I say unto thee, Except a man be born of water and [of] the Spirit, he cannot enter into the kingdom of God.
Contradiction with Acts 10:47-48
Acts 8:36 suggests baptism directly after belief, but Acts 10:47-48 presents baptism after receiving the Holy Spirit, suggesting a different sequence.
Acts 10:47-48: Can any man forbid water, that these should not be baptized, which have received the Holy Ghost as well as we?
Contradiction with 1 Corinthians 1:17
Acts 8:36 portrays baptism as pivotal after believing, whereas 1 Corinthians 1:17 reflects Paul's view that preaching the gospel, not baptism, is primary.
1 Corinthians 1:17: For Christ sent me not to baptize, but to preach the gospel: not with wisdom of words, lest the cross of Christ should be made of none effect. [words: or, speech]
Contradiction with 1 Peter 3:21
Acts 8:36 focuses on baptism as an act following belief, yet 1 Peter 3:21 presents it as symbolic, an answer of a good conscience rather than a necessary immediate act following faith.
1 Peter 3:21: The like figure whereunto [even] baptism doth also now save us (not the putting away of the filth of the flesh, but the answer of a good conscience toward God,) by the resurrection of Jesus Christ: