Matius 15:18

15:18 But the things that come out of the mouth come from the heart, and these things defile a person.

Lukas 6:45

6:45 The good person out of the good treasury of his ¹  heart ²  produces good, and the evil person out of his evil treasury ³  produces evil, for his mouth speaks ⁴  from what fills ⁵  his heart.

[6:45]  ¹ tn Grk “the”; the Greek article has been translated here and in the following clause (“out of the evil”) as a possessive pronoun (ExSyn 215).

[6:45]  ² sn Mention of the heart shows that Jesus is not interested in what is done, but why. Motives are more important than actions for him.

[6:45]  ³ tn The word “treasury” is not repeated in the Greek text at this point, but is implied.

[6:45]  ⁴ sn What one utters from one’s mouth is especially singled out as the example of this principle. James seems to have known this teaching (Jas 1:26; 3:1-12).

[6:45]  ⁵ tn Grk “for out of the abundance of the heart his mouth speaks.”