John Gills Exposition of the Bible Commentary - Psalms 89:24
But my faithfulness and my mercy shall be with him ,.... The "faithfulness" of God was and is with Christ, in performing promises made to him respecting his work, and strength to do it, as man, and the glory that should follow; and also those made to his people in him, relating to grace here, and happiness hereafter: and though there was no "mercy" shown to Christ, as the surety of his people, but he was dealt with in strict justice; yet, as Mediator of the covenant, the special mercy of God... read more
Matthew Henry's Complete Commentary - Psalms 89:19-37
The covenant God made with David and his seed was mentioned before (Ps. 89:3, 4); but in these verses it is enlarged upon, and pleaded with God, for favour to the royal family, now almost sunk and ruined; yet certainly it looks at Christ, and has its accomplishment in him much more than in David; nay, some passages here are scarcely applicable at all to David, but must be understood of Christ only (who is therefore called David our king, Hos. 3:5), and very great and precious promises they are... read more