Contradiction with Matthew 10:5-6
Jesus instructs the apostles to avoid Gentiles and Samaritans, which contrasts with Acts 10:7, where Peter is about to receive Gentile messengers.
Matthew 10:5-6: These twelve Jesus sent forth, and commanded them, saying, Go not into the way of the Gentiles, and into [any] city of the Samaritans enter ye not:
Contradiction with Galatians 2:12
Paul criticizes Peter for withdrawing from Gentiles, which contradicts Peter’s acceptance in Acts 10.
Galatians 2:12: For before that certain came from James, he did eat with the Gentiles: but when they were come, he withdrew and separated himself, fearing them which were of the circumcision.
Contradiction with Acts 11:2-3
The circumcised believers criticize Peter for associating with Gentiles, in contrast to his immediate obedience in Acts 10:7.
Acts 11:2-3: And when Peter was come up to Jerusalem, they that were of the circumcision contended with him,
Contradiction with Matthew 15:24
Jesus says He was sent only to the lost sheep of Israel, conflicting with Peter’s inclusion of Gentiles.
Matthew 15:24: But he answered and said, I am not sent but unto the lost sheep of the house of Israel.
Contradiction with Deuteronomy 7:2-3
Israel is commanded not to make covenants with other nations, contradicting Peter’s actions leading from Acts 10:7.
Deuteronomy 7:2-3: And when the LORD thy God shall deliver them before thee; thou shalt smite them, [and] utterly destroy them; thou shalt make no covenant with them, nor shew mercy unto them: