11. Not that which goeth into the mouth defileth a man; but that which cometh out of the mouth, this defileth a man—This is expressed even more emphatically in Mark (Mr 7:15, 16), and it is there added, "If any man have ears to hear, let him hear." As in Mt 13:9, this so oft-repeated saying seems designed to call attention to the fundamental and universal character of the truth it refers to.