Commentaries:
Robertson's Word Pictures (NT)
Out of the mouth (ek tou stomatov). Spoken words come out of the heart and so are a true index of character. By "heart" (kardiav) Jesus means not just the emotional nature, but the entire man, the inward life of "evil thoughts" (dialogismoi ponhroi) that issue in words and deeds. "These defile the man," not "eating with unwashed hands." The captious quibblings of the Pharisees, for instance, had come out of evil hearts.
DISCLAIMER: Church of the Great God (CGG) provides these resources to aid the individual in studying the Bible. However, it is up to the individual to "prove all things, and hold fast to that which is good" (I Thessalonians 5:21). The content of these resources does not necessarily reflect the views of CGG. They are provided for information purposes only.