Contradiction with Mark 7:15
This verse suggests that nothing outside a person can defile them by going into them, which contradicts the notion of ritual impurity from sitting on an unclean bed as described in Leviticus 15:4.
Mark 7:15: If any man have ears to hear, let him hear.
Contradiction with Matthew 15:11
This verse states that what enters a man does not defile him, running counter to the concept of external sources of impurity as outlined in Leviticus 15:4.
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.