3. Thou shalt turn man to destruction. Moses, in the first place, mentions how frail and transitory is the life of man, and bewails its miseries. This he does, not for the purpose of quarrelling with God, but as an argument to induce him the more readily to exercise his mercy, even as he is elsewhere said to pardon mortal men, when he considers of what they are made, and remembers that they are but dust and grass, (Psalm 103:14.) he compares the course of our life to a ring or circle, because God, placing us upon the earth, turns us about within a narrow circuit, and when we have reached the last point, draws us back to himself in a moment. Others give a different interpretation, namely, that God leads men forth to death, and afterwards restores them at the resurrection. But this subtilty is far-fetched, and does not harmonise with the context. We have here laid down a simple definition of our life, that it is, as it were, a short revolution in which we quickly complete our circle, the last point of which is the termination of our earthly course. This account of human life sets in a clearer light the gracious manner in which God deals with his servants, in adopting them to be his peculiar people, that he may at length gather them together into his everlasting inheritance. Nor is it in vain that it is added, by way of contrast, (verse 4,) that a thousand years in God's sight are as yesterday. Although we are convinced from experience that men, when they have completed their circle, are forthwith taken out of the world, yet the knowledge of this frailty fails in making a deep impression upon our hearts, because we do not lift our eyes above the world. Whence proceeds the great stupidity of men, who, bound fast to the present state of existence, proceed in the affairs of life as if they were to live two thousand years, but because they do not elevate their conceptions above visible objects? Each man, when he compares himself with others, flatters himself that he will live to a great age. In short, men are so dull as to think that thirty years, or even a smaller number, are, as it were, an eternity; nor are they impressed with the brevity of their life so long as this world keeps possession of their thoughts. This is the reason why Moses awakens us by elevating our minds to the eternity of God, without the consideration of which we perceive not how speedily our life vanishes away. The imagination that we shall have a long life, resembles a profound sleep in which we are all benumbed, until meditation upon the heavenly life swallow up this foolish fancy respecting the length of our continuance upon earth.

As men are thus blinded, Moses sets before their view God as their judge. O Lord! as if he had said, if men would duly reflect upon that eternity from which thou beholdest these inconstant circlings of the world, they would not make so great account of the present life. But as, instead of seriously considering what is true duration, they rather wilfully turn away their eyes from heaven, this explains why they are so stupid, and look upon one day as if it were a hundred years. Moses' apostrophe to God is emphatic, implying that his patience being exhausted at seeing us so thoughtless, he addresses himself to God; and that it was labor to no purpose for him to speak to the deaf, who would not be taught that they were mortal, no, not even by the proofs of this, which experience was constantly presenting before them. This text is quoted by the Apostle Peter in a sense somewhat different, (2 Peter 3:8,) while at the same time he does not pervert it, for he aptly and judiciously applies the testimony of Moses in illustration of the subject of which he is there treating. The design of Moses is to elevate the minds of men to heaven by withdrawing them from their own gross conceptions. And what is the object of Peter? As many, because Christ does not hasten his coming according to their desire, cast off the hope of the resurrection through the weariness of long delay, he corrects this preposterous impatience by a very suitable remedy. He perceives men's faith in the Divine promises fainting and failing, from their thinking that Christ delays his coming too long. Whence does this proceed, but because they grovel upon the earth? Peter therefore appropriately applies these words of Moses to cure this vice. As the indulgence in pleasures to which unbelievers yield themselves is to be traced to this, that having their hearts too much set upon the world, they do not taste the pleasures of a celestial eternity; so impatience proceeds from the same source. Hence we learn the true use of this doctrine. To what is it owing that we have so great anxiety about our life, that nothing suffices us, and that we are continually molesting ourselves, but because we foolishly imagine that we shall nestle in this world for ever? Again, to what are we to ascribe that extreme fretfulness and impatience, which make our hearts fail in waiting for the coming of Christ, but to their grovelling upon the earth? Let us learn then not to judge according to the understanding of the flesh, but to depend upon the judgment of God; and let us elevate our minds by faith, even to his heavenly throne, from which he declares that this earthly life is nothing. Nor does Moses simply contrast a thousand years with one day, but he contrasts them with yesterday, which is already gone; for whatever is still before our eyes has a hold upon our minds, but we are less affected with the recollection of what is past. In regard to the word watch, the ancients, as is well known, were accustomed to divide the night into four watches, consisting of three hours each. ¹ To express still more forcibly how inconsiderable that which appears to us a long period is in God's eyes, this similitude is added, That a thousand years in his sight differ nothing from three hours of the night, in which men scarcely know whether they are awake or asleep.

5. Thou carriest them away as with a flood. Moses confirms what he had previously said, That men, so long as they are sojourners in this world, perform, as it were, a revolution which lasts only for a moment. I do not limit the expression to carry away as with a flood to calamities of a more grievous kind, but consider that death is simply compared in general to a flood; for when we have staid a little while in the world, we forthwith fall into the grave and are covered with earth. Thus death, which is common to all, is with propriety called an inundation. While we are breathing the breath of life, the Lord overflows us by death, just as those who perish in a shipwreck are engulfed in the ocean; so that death may be fitly called an invisible deluge. And Moses affirms, that it is then evidently seen that men who flatter themselves that they are possessed of wonderful vigor in their earthly course, are only as a sleep. The comparison of grass which is added, amounts to this, That men come forth in the morning as grass springs up, that they become green, or pass away within a short time, when being cut down, they wither and decay. The verbs in the 6th verse being in the singular number, it is better to connect them with the word grass. But they may also be appropriately referred to each man; and as it makes little difference as to the sense of the text, whether we make grass or each man the nominative to the verbs, I am not disposed to expend much labor upon the matter. This doctrine requires to be continually meditated upon; for although we all confess that nothing is more transitory than our life, yet each of us is soon carried away, as it were, by a frantic impulse to picture to his own imagination an earthly immortality. Whoever bears in mind that he is mortal, restrains himself, that instead of having his attention and affections engrossed beyond measure with earthly objects, he may advance with haste to his mark. When we set no limit to our cares, we require to be urged forward by continual goadings, that we may not dream of a thousand lives instead of one, which is but as a shadow that quickly vanishes away.

7. For we fail by thy anger. Moses makes mention of the anger of God advisedly; for it is necessary that men be touched with the feeling of this, in order to their considering in good earnest, what experience constrains them to acknowledge, how soon they finish their course and pass away. He had, however, still another reason for joining together the brevity of human life and the anger of God. Whilst men are by nature so transitory, and, as it were, shadowy, the Israelites were afflicted by the hostile hand of God; and his anger is less supportable by our frail natures, which speedily vanish away, than it would be were we furnished with some tolerable degree of strength.

8. Thou hast set our iniquities before thee. To show that by this complaint he is far from intending to murmur against God, he asserts that the Divine anger, however terrible it had been, was just, inasmuch as the people had provoked it by their iniquities; for those who, when stricken by the Divine hand, are not brought to genuine humiliation, harden themselves more and more. The true way to profit, and also to subdue our pride, is to feel that He is a righteous judge. Accordingly Moses, after having briefly taught that men by nature vanish away like smoke, gathers from thence that it is not to be wondered at if God exanimates and consumes those whom he pursues with his wrath. The manner of the expression by which God is described as showing the tokens of his anger is to be observed -- he sets the iniquities of men before his eyes. Hence it follows, that whatever intermission of punishment we experience ought in justice to be ascribed to the forbearance of. God, who buries our sins that he may spare us. The word Mymwle, alumim, which I have rendered our secret sins, is translated by some, our youth; ² as if Moses had said that the faults committed in youth are brought to remembrance. But this is too forced, and inconsistent with the scope of the passage; for it would destroy the contrast between secret sins and the light of God's countenance, by which Moses intimates that men hide themselves in darkness, and wrap themselves in many deceits, so long as God does not shine upon them with the light of his judgment; whereas, when he draws them back from their subterfuges, by which they endeavor to escape from him, and sets before his eyes the sins which they hide by hypocrisy, being subdued by fear and dread, they are brought sincerely to humble themselves before him.