Proverbs 25:19 - Joseph Benson’s Commentary on the Old and New Testaments

Confidence in an unfaithful man, &c. “As a broken tooth, or leg out of joint, not only fails a man when he comes to use them, but likewise puts him into pain; so doth a faithless person serve them that depend upon him, when they have the greatest need of his help; and such also is the confidence that a faithless person himself places in riches, or craft, or great friends, &c, which some time or other will disappoint him to his great grief, when he expects the most from them.” Bishop Patrick.