18. Behold, the eye of Jehovah is upon them that fear him. Having shown that what men account their best defences often profit them nothing, or rather are utterly worthless, when men depend upon them; the Psalmist now shows, on the other hand, that believers, although they are neither men of great power nor of great wealth, are nevertheless sufficiently protected by God’s favor alone, and shall be safe for ever. His meaning is not a little illustrated by this comparison, that kings and giants derive no aid from their invincible strength, while God supports the life of the saints in famine and dearth, as really as if he were to restore life to them when dead. We consequently understand better why the prophet lays low all the strength of the world; not, surely, that men should lie prostrate, or be so heart-broken as to pine away in despair; but that, laying aside their pride, they should fix their thoughts on God alone, and persuade themselves that their life depends on his protection. Moreover, in saying that the eye of God is bent upon them that fear him to save them, he expresses more than if he had said that his hand and power were sufficient to preserve them. A doubt might creep into the minds of the weak, whether God would extend this protection to every individual; but when the Psalmist introduces him as keeping watch and ward, as it were, over the safety of the faithful, there is no reason why any one of them should tremble, or hesitate with himself a moment longer, since it is certain that God is present with him to assist him, provided he remain quietly under his providence. From this, also, it appears still more clearly how truly he had said a little before, that the people are blessed whose God is Jehovah, because, without him, all the strength and riches which we may possess will be vain, deceitful, and perishing; whereas, with a single look he can defend his people, supply their wants, feed them in a time of famine, and preserve them alive when they are appointed to death. The whole human race, no doubt, are maintained by the providence of God; but we know that his fatherly care is specially vouchsafed to none but his own children, that they may feel that their necessities are truly regarded by him.