The mouth of the just bringeth forth wisdom: but the froward tongue shall be cut out.

Jamieson-Fausset-Brown Bible Commentary

31. bringeth forth-literally, "germinates" as a plant.

froward-(Compare Pr 2:12, 14).

cut off-as an unproductive plant.

Matthew Henry's Concise Commentary

10:29. The believer grows stronger in faith, and obeys with increased delight. 30. The wicked would be glad to have this earth their home for ever, but it cannot be so. They must die and leave all their idols behind. 31,32. A good man discourses wisely for the benefit of others. But it is the sin, and will be the ruin of a wicked man, that he speaks what is displeasing to God, and provoking to those he converses with. The righteous is kept by the power of God; and nothing shall be able to separate him from the love of God which is in Christ Jesus.

Matthew Henry's Whole Bible Commentary

Verses 31-32

Here, as before, men are judged of, and, accordingly, are justified or condemned, by their words, Mt. 12:37. 1. It is both the proof and the praise of a man's wisdom and goodness that he speaks wisely and well. A good man, in his discourse, brings forth wisdom for the benefit of others. God gives him wisdom as a reward of his righteousness (Eccl. 2:26), and he, in gratitude for that gift and justice to the giver, does good with it, and with his wise and pious discourses edifies many. He knows what is acceptable, what discourse will be pleasing to God (for that is it that he studies more than to oblige the company), and what will be agreeable both to the speaker and to the hearers, what will become him and benefit them, and that he will speak. 2. It is the sin, and will be the ruin, of a wicked man, that he speaks wickedly like himself. The mouth of the wicked speaks frowardness, that which is displeasing to God and provoking to those he converses with; and what is the issue of it? Why, the froward tongue shall be cut out, as surely as the flattering one, Ps. 12:3.