Psalms 34:13

“Keep thy tongue from evil, etc.] This, and what follows in this verse and (<193414>Psalm 34:14), point at the things wherein the fear of God shows itself; and suggest, that those who have it, and which is known by these fruits, shall enjoy the desirable and good days before mentioned. The tongue is an instrument of much evil, an unruly member, and needs restraint; and it is from evil, and not from good, it is to be kept; from evil speaking of God, from cursing and swearing; from evil speaking of men, reproaching and reviling them; from filthy speaking, from all obscene and unchaste words, and from all lying ones; for where such evil speaking is indulged, the fear of God cannot be in that…”

“Sins of thought included in those of speech (Luk 6:45), avoiding evil and doing good in our relations to men are based on a right relation to God.”

“Keep thy tongue from evil - From speaking wrong things. Always give utterance to truth, and truth alone. The meaning is, that this is one of the methods of lengthening out life. To love the truth; to speak the truth; to avoid all falsehood, slander, and deceit, will contribute to this, or will be a means which will tend to prolong life, and to make it happy. And thy lips from speaking guile - Deceit. Do not “deceive” others by your words. Do not make any statements which are not true, or any promises which you cannot and will not keep. Do not flatter others; and do not give utterance to slander. Be a man characterized by the love of truth: and let all your words convey truth, and truth only.…”

“Evil - From all manner of evil speaking, from all injurious, false and deceitful speeches. Psalms 34:14”

“34:13 Godly people control their words; speaking evil and telling lies are foolish (see 10:7; cp. 17:1).”

“Keep: Psa 39:1; Pro 18:21; Mat 12:35-37; Jam 1:19, Jam 1:26, Jam 3:2, Jam 3:5-10 speaking: Psa 55:11; Pro 12:7, Pro 12:19, Pro 12:22, Pro 19:9; Isa 63:8; Col 3:9; Pe1 2:1, Pe1 2:22; Rev 14:4, Rev 14:5 Psalms 34:14”