And he got the people together and said to them, Give ear, and let my words be clear to you: Not that which goes into the mouth makes a man unclean, but that which comes out of the mouth. Then the disciples came and said to him, Did you see that the Pharisees were troubled when these words came to their ears? But he said in answer, Every plant which my Father in heaven has not put in the earth, will be taken up by the roots. Let them be: they are blind guides. And if a blind man is guiding a blind man, the two will go falling into a hole together. Then Peter said to him, Make the story clear to us. And he said, Are you, like them, still without wisdom? Do you not see that whatever goes into the mouth goes on into the stomach, and is sent out as waste? But the things which come out of the mouth come from the heart; and they make a man unclean. For out of the heart come evil thoughts, the taking of life, broken faith between the married, unclean desires of the flesh, taking of property, false witness, bitter words: These are the things which make a man unclean; but to take food with unwashed hands does not make a man unclean. (Matthew, 15:10-20)