10:12-18 The psalmist speaks with astonishment, at the wickedness of the wicked, and at the patience and forbearance of God. God prepares the heart for prayer, by kindling holy desires, and strengthening our most holy faith, fixing the thoughts, and raising the affections, and then he graciously accepts the prayer. The preparation of the heart is from the Lord, and we must seek unto him for it. Let the poor, afflicted, persecuted, or tempted believer recollect, that Satan is the prince of this world, and that he is the father of all the ungodly. The children of God cannot expect kindness, truth, or justice from such persons as crucified the Lord of glory. But this once suffering Jesus, now reigns as King over all the earth, and of his dominion there shall be no end. Let us commit ourselves unto him, humbly trusting in his mercy. He will rescue the believer from every temptation, and break the arm of every wicked oppressor, and bruise Satan under our feet shortly. But in heaven alone will all sin and temptation be shut out, though in this life the believer has a foretaste of deliverance.
16-18. God reigns. The wicked, if for a time successful, shall be cut off. He hears and confirms the hearts of His suffering people (Ps 112:7), executes justice for the feeble, and represses the pride and violence of conceited, though frail, men (compare Ps 9:16).