Charles H. Spurgeon on Psalms 25:7

According to thy mercy. Moses was the first that brought up this happy expression, According to thy mercy (I know not where it is used by any other man), that is, according to the infinite mercy that is in thy heart and nature. David did next use it (Psalm 25), and in the great case of his sin and adultery Ps 51:1, "that he would be merciful to him, according to the multitude of his mercies." And as he needed all the mercies in God, so he confessed the sin of his nature, and hath recourse to the mercies in God's nature. But it is Ps 25:7, I pitch on; there he doth not content himself only with this expression, According to thy mercy, but he adds another phrase, "For thy mercy's sake, "and goodness sake. Muis observes in this coherence, "Good and upright is the Lord" Ps 25:8, that he centres in his nature. Thou hast a merciful nature; deal with me according to that, and for the sake of that, "according to thy mercy, "for thy goodness sake." The mediation of that attribute was the foundation of his faith and prayer herein. When he has done, he refers himself to Moses: Ps 25:11, For thy name's sake, O Lord, pardon mine iniquity; for it is great. He refers to that name proclaimed before Moses. Ex 34:6,7. But you will say, how do these expressions, "for thy name's sake, "for thy goodness sake, "for thy mercy's sake, "imply the same as "for himself, "for his own sake"? how do they involve the Godhead? Look to Isa 43:25, "I, even I, am he that blotteth out thy transgressions for mine own sake, "that is, for myself. Isa 48:11. "For mine own sake, even for mine own sake, will I do it." You have it twice in one verse; and that which is "for mercy's sake" in one place, is "for mine own sake" in another, "and behold it is I, I am he, as I am God, who doth it. What is this, but Jehovah, Jehovah, God merciful"? Thomas Goodwin.