Psalms 34:13

Keep thy tongue from evil,.... This, and what follows in this verse and Psa 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.

To enforce this good counsel he shows God's favour to the righteous and his displeasure against the wicked, in which he sets before us good and evil, the blessing and the curse,

Since nothing is more contrary to that love which never fails (which is the summary both of law and gospel, both of grace and glory) than strife and contention, which bring confusion and every evil work, we must seek peace and pursue it; we must show a peaceable disposition, study the things that make for peace, do nothing to break the peace and to make mischief.

Keep thy tongue from evil. Guard with careful diligence that dangerous member, the tongue, lest it utter evil, for that evil will recoil upon thee, and mar the enjoyment of thy life. Men cannot spit forth poison without feeling some of the venom burning their own flesh. And thy lips from speaking guile. Deceit must be very earnestly avoided by the man who desires happiness. A crafty schemer lives like a spy in the enemy's camp, in constant fear of exposure and execution.

Keep thy tongue from evil. Guard with careful diligence that dangerous member, the tongue, lest it utter evil, for that evil will recoil upon thee, and mar the enjoyment of thy life. Men cannot spit forth poison without feeling some of the venom burning their own flesh. And thy lips from speaking guile. Deceit must be very earnestly avoided by the man who desires happiness. A crafty schemer lives like a spy in the enemy's camp, in constant fear of exposure and execution. Clean and honest conversation, by keeping the conscience at ease, promotes happiness, but lying and wicked talk stuffs our pillow with thorns, and makes life a constant whirl of fear and shame. David had tried the tortuous policy, but he here denounces it, and begs others as they would live long and well to avoid with care the doubtful devices of guile.

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. It cannot be doubted that this, like all other virtues, would tend to lengthen life, and to make it prosperous and peaceful. There is no vice which does not tend to abridge human life, as there is no virtue which does not tend to lengthen it. But probably the specific idea here is, that the way to avoid the hostility of other people, and to secure their favor and friendship, is to deal with them truly, and thus to live in peace with them. It is true, also, that God will bless a life of virtue and uprightness, and though there is no absolute certainty that anyone, however virtuous he may be, may not be cut off in early life, yet it is also true that, other things being equal, a man of truth and integrity will be more likely to live long - (as he will be more certain to make the most of life) - than one who is false and corrupt.