Contradiction with Matthew 15:11
This verse suggests that what comes out of a man's mouth defiles him, not what touches him externally, contradicting the idea that touching something can make one unclean.
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 Mark 7:15
Similar to Matthew 15:11, this verse implies that external contact does not defile a person, opposing Leviticus 15:5 which identifies physical touch as causing uncleanness.
Mark 7:15: If any man have ears to hear, let him hear.
Contradiction with Romans 14:14
Paul states that nothing is unclean in itself, contradicting the notion in Leviticus that touching a bed makes one unclean.
Romans 14:14: I know, and am persuaded by the Lord Jesus, that [there is] nothing unclean of itself: but to him that esteemeth any thing to be unclean, to him [it is] unclean. [unclean: Gr. common]