It is not only promised that God will guide the upright, and threatened that he will destroy the transgressors, but, that we may be the more fully assured of both, it is here represented as if the nature of the thing were such on both sides that it would do it itself. 1. The integrity of an honest man will itself be his guide in the way of duty and the way of safety. His principles are fixed, his rule is certain, and therefore his way is plain; his sincerity keeps him steady, and he needs not tack about every time the wind turns, having no other end to drive at than to keep a good conscience. Integrity and uprightness will preserve men, Ps. 25:21. 2. The iniquity of a bad man will itself be his ruin. As the plainness of a good man will be his protection, though he is ever so much exposed, so the perverseness of sinners will be their destruction, though they think themselves eve so well fortified. They shall fall into pits of their own digging, Prov. 5:22.