The Lord knoweth the days of the upright - See the notes at Psalm 1:6. He knows how long they will live, and all that will happen to them. He sees their whole course of life; he sees the end. It is implied here that his eyes are on all the allotted days of their life; on all that has been ordained for them in the whole course of their life; and that nothing can shorten the days appointed to them. The wicked expect to live, hope to live, make their arrangements to live; but their eyes cannot rest on the future, and they cannot see the end - cannot tell precisely when they will be cut off. Some unexpected calamity - something which they cannot foresee - may come upon them, and cut short their days long before the expected thee; but this cannot happen in respect to Him whose eyes are on the righteous. Nothing can prevent their reaching the thee which he has fixed as the termination of their lives.

And their inheritance shall be forever - Shall be permanent, enduring. Perhaps all that was implied in tiffs language, as it was used by the psalmist, was that they would "continue," or would not be cut off as the wicked are; that is, that righteousness would contribute to length of days upon the earth (compare Psalm 37:9); yet the "language" suggests a higher idea, and is applicable to the righteous in respect to the promise that they will be put in "everlasting" possession of that which they "inherit" from God; that is, that they will be literally blessed forever. They will have a sure inheritance on earth, and it will endure to all eternity in another world.

The Lord knoweth the days of the upright - He is acquainted with all his circumstances, severings, and ability to bear them; and he will either shorten his trials or increase his power. The Lord also approves of the man and his concerns; and his inheritance shall be for ever. He shall have God for his portion, here and hereafter. This is probably another indirect promise to the captives that they shall be restored to their own land. See Psalm 37:11.

The Lord knoweth the days of the upright,.... Not only how long they shall live, and so fill up their days, the number of them, as Aben Ezra interprets it; but the nature of their days, whether prosperous or adverse; and causes both to work together for their good; and he knows the work of their days, as Jarchi explains it, the actions done by them in faith and love, and to his honour and glory, and which he approves and accepts of in Christ; see Psalm 1:6;

and their inheritance shall be for ever; in heaven, which is an eternal and never fading one, Hebrews 9:15; and therefore they ought not to fret and be envious.

The life of those who love Jahve with the whole heart is, with all its vicissitudes, an object of His loving regard and of His observant providential care, Psalm 1:6; Psalm 31:8, cf. Psalm 16:1-11. He neither suffers His own to lose their heritage nor to be themselves lost to it. The αἰώνιος κληρονομία is not as yet thought of as extending into the future world, as in the New Testament. In Psalm 37:19 the surviving refers only to this present life.

The LORD {l} knoweth the days of the upright: and their inheritance shall be for ever.

(l) God knows what dangers hang over his, and by what means to deliver them.

37:18 Knoweth - Observes with care and affection. The days - All things which befal them, their dangers and fears, and suffering. For ever - To them and their seed for ever: and when they die their inheritance is not lost, but exchanged for one infinitely better.

18, 19. God, who knows His people's changes, provides against evil and supplies all their need.

37:7-20 Let us be satisfied that God will make all to work for good to us. Let us not discompose ourselves at what we see in this world. A fretful, discontented spirit is open to many temptations. For, in all respects, the little which is allotted to the righteous, is more comfortable and more profitable than the ill-gotten and abused riches of ungodly men. It comes from a hand of special love. God provides plentifully and well, not only for his working servants, but for his waiting servants. They have that which is better than wealth, peace of mind, peace with God, and then peace in God; that peace which the world cannot give, and which the world cannot have. God knows the believer's days. Not one day's work shall go unrewarded. Their time on earth is reckoned by days, which will soon be numbered; but heavenly happiness shall be for ever. This will be a real support to believers in evil times. Those that rest on the Rock of ages, have no reason to envy the wicked the support of their broken reeds.