Contradiction with Acts 10:15
This verse emphasizes that what God has cleansed should not be called common or unclean, which is a departure from the Old Testament law's detailed rules about impurity.
Acts 10:15: And the voice [spake] unto him again the second time, What God hath cleansed, [that] call not thou common.
Contradiction with Matthew 15:11
Here, Jesus declares that it is not what goes into the mouth (external observation) that defiles a man, but what comes out of the mouth, suggesting a shift from ritual impurity to moral purity.
Matthew 15:11: Not that which goeth into the mouth defileth a man; but that which cometh out of the mouth, this defileth a man.
Contradiction with Hebrews 8:13
This verse speaks about the old covenant being obsolete and replaced by the new covenant, which implies a movement away from the old laws and their detailed purity regulations.
Hebrews 8:13: In that he saith, A new [covenant], he hath made the first old. Now that which decayeth and waxeth old [is] ready to vanish away.