Charles H. Spurgeon on Psalms 7:4

Then is grace victorious, and then hath a man a noble and brave spirit, not when he is overcome by evil (for that argueth weakness), but when he can overcome evil. And it is God's way to shame the party that did the wrong, and to overcome him too; it is the best way to get the victory over him. When David had Saul at an advantage in the cave, and cut off the lap of his garment, and did forbear any act of revenge against him, Saul was melted, and said to David, "Thou art more righteous than I." 1 Samuel 24:17. Though he had such a hostile mind against him, and chased and pursued him up and down, yet when David forbear revenge when it was in his power, it overcame him, and he falls a-weeping. Thomas Manton.