John Calvin's Bible Commentary
Psalms 85:5
5Wilt thou be wroth against us for ever? Here the godly bewail the long continuance of their afflictions, and derive an argument in prayer from the nature of God, as it is described in the law, —
“The Lord, The Lord God, merciful and gracious, long-suffering, and abundant in goodness and truth, keeping mercy for thousands, forgiving iniquity, and transgression, and sin,”
(Exodus 34:6,)
— a truth which has also been brought under our notice in Psalms 30:5, “For his anger endureth but a moment; in his favor is life: weeping may endure for a night, but joy cometh in the morning.” It thus becomes us, when we engage in prayer, to meditate upon the Divine promises that we may be furnished with suitable expressions. It may seem, at first view, that these devout Jews find fault with God, as if he exhibited his character to them in a light very different from that in which he was wont to exhibit it; but the object they had in view undoubtedly was to obtain, in the struggle they were resolutely maintaining against temptation, hope of relief from the contemplation of the nature of God; as if they laid it down as a fixed principle, that it is impossible for Him to be angry for ever. We may observe, by the way, that it is evident, from their praying in this manner, that they were weighed down with such an oppressive load of calamities, as to be almost unable any longer to endure them. Let us therefore learn, that although God may not immediately grant us manifest tokens of his returning favor, yet we must not cease to persevere in earnest prayer. If it is objected, that then God has promised in vain that his anger would be of short duration, I answer, that if we entertain suitable views of our own sins, his anger will assuredly appear to be always of short continuance; and if we call to remembrance the everlasting course of his mercy, we will confess that his anger endures but for a moment. As our corrupt nature is ever relapsing into the wanton indulgence of its native propensities, manifold corrections are indispensably necessary to subdue it thoroughly.