Matthew 15:18

18 but the things coming forth from the mouth from the heart do come forth, and these defile the man;

Matthew 15:18 Meaning and Commentary

Matthew 15:18

But those things which proceed out of the mouth
Meaning not material things, as spittle, vomit but, as it follows, which

come forth from the heart:
are first conceived and formed there, and then come forth from thence, and are expressed by the mouth; as all idle words, foolish talking, filthy jesting, unsavoury communication, and every word that is rotten and corrupt, or which is done in the life and conversation;

and they defile the man:
the heart is the corrupt fountain from whence all moral defilement flows; and sinful words and actions are the impure streams, which spring from thence, and increase the moral pollution of human nature.

Matthew 15:18 In-Context

16 And Jesus said, `Are ye also yet without understanding?
17 do ye not understand that all that is going into the mouth doth pass into the belly, and into the drain is cast forth?
18 but the things coming forth from the mouth from the heart do come forth, and these defile the man;
19 for out of the heart come forth evil thoughts, murders, adulteries, whoredoms, thefts, false witnessings, evil speakings:
20 these are the things defiling the man; but to eat with unwashen hands doth not defile the man.'
Young's Literal Translation is in the public domain.