Wise men lay up knowledge: but the mouth of the foolish is near destruction.

Wesley's Notes

10:14 Lay up - In their minds, to be brought forth upon fit occasions. Knowledge - Whereby they may be enabled to speak both what, and when it is seasonable. But - Fools are more forward to lay out than to lay up, and for want of knowledge speak much and foolishly, whereby they frequently bring destruction upon themselves.

Jamieson-Fausset-Brown Bible Commentary

14. lay up knowledge-that is, as treasures for good use.

mouth . destruction-or, "as to the mouth," &c., destruction is near; they expose themselves to evil by prating.

Matthew Henry's Concise Commentary

10:7. Both the just and the wicked must die; but between their souls there is a vast difference. 8. The wise in heart puts his knowledge in practice. 9. Dissemblers, after all their shuffling, will be exposed. 10. Trick and artifice will be no excuse for iniquity. 11. The good man's mouth is always open to teach, comfort, and correct others. 12. Where there is hatred, every thing stirs up strife. By bearing with each other, peace and harmony are preserved. 13. Those that foolishly go on in wicked ways, prepare rods for themselves. 14. Whatever knowledge may be useful, we must lay it up, that it may not be to seek when we want it. The wise gain this wisdom by reading, by hearing the word, by meditation, by prayer, by faith in Christ, who is made of God unto us wisdom. 15. This refers to the common mistakes both of rich and poor, as to their outward condition. Rich people's wealth exposes them to many dangers; while a poor man may live comfortably, if he is content, keeps a good conscience, and lives by faith. 16. Perhaps a righteous man has no more than what he works hard for, but that labour tends to life. 17. The traveller that has missed his way, and cannot bear to be told of it, and to be shown the right way, must err still. 18. He is especially a fool who thinks to hide anything from God; and malice is no better. 19. Those that speak much, speak much amiss. He that checks himself is a wise man, and therein consults his own peace. 20,21. The tongue of the just is sincere, freed from the dross of guile and evil design. Pious discourse is spiritual food to the needy. Fools die for want of a heart, so the word is; for want of thought.

Matthew Henry's Whole Bible Commentary

Verse 14

Observe, 1. It is the wisdom of the wise that they treasure up a stock of useful knowledge, which will be their preservation: Wisdom is therefore found in their lips (v. 13), because it is laid up in their hearts, out of which store, like the good householder, they bring things new and old. Whatever knowledge may be at any time useful to us we must lay it up, because we know not but some time or other we may have occasion for it. We must continue laying up as long as we live; and be sure to lay it up safely, that it may not be to seek when we want it. 2. It is the folly of fools that they lay up mischief in their hearts, which is ready to them in all they say, and works terror and destruction both to others and to themselves. They love devouring words (Ps. 52:4), and these come uppermost. Their mouth is near destruction, having the sharp arrows of bitter words always at hand to throw about.