I said in my heart, God shall judge the righteous and the wicked: for there is a time {g} there for every purpose and for every work.

(g) Meaning, with God, however man neglects his duty.

Wesley's Notes

3:17 I said - I was sorely grieved at this, but I quieted myself with this consideration. Shall judge - Absolving the just, and condemning the wicked. A time - God will have his time to rectify all these disorders. There - At the judgment - seat of God. For - For examining not only all men's actions, but all their thoughts and purposes.

Jamieson-Fausset-Brown Bible Commentary

17. Solution of it. There is a coming judgment in which God will vindicate His righteous ways. The sinner's "time" of his unrighteous "work" is short. God also has His "time" and "work" of judgment; and, meanwhile, is overruling, for good at last, what seems now dark. Man cannot now "find out" the plan of God's ways (Ec 3:11; Ps 97:2). If judgment instantly followed every sin, there would be no scope for free will, faith, and perseverance of saints in spite of difficulties. The previous darkness will make the light at last the more glorious.

there-(Job 3:17-19) in eternity, in the presence of the Divine Judge, opposed to the "there," in the human place of judgment (Ec 3:16): so "from thence" (Ge 49:24).

Matthew Henry's Concise Commentary

3:16-22 Without the fear of the Lord, man is but vanity; set that aside, and judges will not use their power well. And there is another Judge that stands before the door. With God there is a time for the redressing of grievances, though as yet we see it not. Solomon seems to express his wish that men might perceive, that by choosing this world as their portion, they brought themselves to a level with the beasts, without being free, as they are, from present vexations and a future account. Both return to the dust from whence they were taken. What little reason have we to be proud of our bodies, or bodily accomplishments! But as none can fully comprehend, so few consider properly, the difference between the rational soul of man, and the spirit or life of the beast. The spirit of man goes upward, to be judged, and is then fixed in an unchangeable state of happiness or misery. It is as certain that the spirit of the beast goes downward to the earth; it perishes at death. Surely their case is lamentable, the height of whose hopes and wishes is, that they may die like beasts. Let our inquiry be, how an eternity of existence may be to us an eternity of enjoyment? To answer this, is the grand design of revelation. Jesus is revealed as the Son of God, and the Hope of sinners.