Acts 11:8

But I said, Not so, Lord: for nothing common or unclean hath at any time entered into my mouth.

Cross-reference

In Leviticus 10:10, God commands distinguishing holy from common — the very law Peter's vision in Acts 11:8 overturns.

In Leviticus 11:47, the law distinguishes clean from unclean animals — the standard Peter in Acts 11:8 claims to have kept.

In Romans 14:14, Paul states nothing is unclean in itself — directly affirming the lesson of Peter's vision in Acts 11:8.

Matthew 15:11 records Jesus' teaching that nothing entering the mouth defiles — the very principle Peter must learn through the vision.

Mark 7:15 Parallel

Mark 7:15 similarly teaches that external things cannot defile — reinforcing the lesson Peter is being given in the vision.