Matthew 15:18

18The thingsτὰhoweverδὲgoing forthἐκπορευόμεναout ofἐκtheτοῦmouthστόματοςout ofἐκtheτῆςheartκαρδίαςcome forthἐξέρχεται,and theseκἀκεῖναdefileκοινοῖtheτὸνmanἄνθρωπον.

But the things proceeding out of the mouth come forth out of the heart, and these defile the man.