Their sword shall enter into their own heart - Their purposes will recoil on themselves; or they will themselves suffer what they had devised for others. See the same sentiment expressed in Psalm 7:15-16; Psalm 9:15; compare Esther 7:10.

And their bows shall be broken - They will be defeated in their plans. God will cut them off, and not suffer them to execute their designs.

Their sword shall enter into their own heart - All their execrations and maledictions shall fall upon themselves, and their power to do mischief shall be broken.

Their sword shall enter into their own heart,.... As Saul's did into his, 1 Samuel 31:4;

and their bows shall be broken; the meaning is, that their efforts shall be fruitless, and their attempts in vain; the mischief they have contrived and designed for others shall fall upon themselves; see Psalm 7:15; and therefore the saints should not be fretful and envious.

Their sword shall enter into their own heart, and their bows shall be broken.

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.