Matthew 15:15-20

15Peter asked Him, “Explain this parable [about what defiles a person] to us.”

16And He said, “Are you still so dull [and unable to put things together]?

17Do you not understand that whatever goes into the mouth passes into the stomach, and is eliminated?

18But whatever [word] comes out of the mouth comes from the heart, and this is what defiles and dishonors the man.

19For out of the heart come evil thoughts and plans, murders, adulteries, sexual immoralities, thefts, false testimonies, slanders (verbal abuse, irreverent speech, blaspheming).

20These are the things which defile and dishonor the man; but eating with [ceremonially] unwashed hands does not defile the man.”