John Gill's Exposition of the Whole Bible
Proverbs 10:29
The way of the Lord [is] strength to the upright,.... Who are upright in heart and life; who have the uprightness or righteousness of Christ imputed to them, and right spirits renewed in them; in consequence of which they walk uprightly, Proverbs 10:9. To these "the way of the Lord [is] strength"; both the way which he himself takes, and the way which he prescribes and directs his people to walk in: the way in which he walks in providence towards them is the strength of them; he is their shade on their right hand; he shows himself strong on their behalf; he is their fortress and strong tower, as the God of providence, even a wall of fire round about them: and the way he takes in the discoveries of his love; in the communications of his grace; in the application of precious promises; by granting the influences of his Spirit; and by leading to his Son, the than of his right hand, made strong for himself and them, is very strengthening unto them: so likewise the way in which he leads his people, the way of his word and ordinances; which, as it is pleasant, so strengthening; the more they walk in them, the stronger they are; they go from strength to strength, they grow stronger and stronger by them; while they are waiting on the Lord in them, their spiritual strength is renewed: moreover, walking in the way of the Lord gives them spirit and courage, and makes them bold and intrepid; so that they fear no enemy, nor any dangers and difficulties, but go on their way cheerfully and pleasantly;
but destruction [shall be] to the workers of iniquity; not to all that do iniquity, for no man lives without sin; but to those who give up themselves to it, make a trade of it; whose course of life is sinful, and do nothing else but sin; this their way leads to ruin; destruction and misery are now in all their ways, and will be the certain issue of them, even destruction of both soul and body; which will be swift and sudden, come upon them before they are aware, and will be everlasting; it will continue for ever, and there will be no deliverance from it. The Word x signifies terror and consternation; and such seize on a wicked man at death, to whom death is the king of terrors; and which will still more strongly possess him when in hell he lifts up his eyes; and also at the day of judgment, when he shall see the Judge coming in the clouds of heaven, sitting on a fiery throne, and shall hear him pronounce him cursed. The clause may be rendered, but the way of the Lord is "terror to the workers of iniquity" y; the way of the Lord in his works of providence, in which he oftentimes does terrible things in righteousness; and he is very terrible to men in his judgments here, and will be more so in his awful procedure at the last judgment.
x מחתה "pavor", V. L. Pagninus, Tigurine version, Mercerus, Gejerus; "consternatio", Vatablus, Cocceius, Michaelis. y So Mercerus, Gejerus.