John Gills Exposition of the Bible Commentary - Psalms 89:20
I have found David my servant ,.... Not David literally; but his Son and antitype, the Messiah, who is sometimes called by his name; See Gill on Psalm 89:3 , and his "finding" him does not suppose any ignorance of him, nor anxious solicitude in seeking him, nor any fortuitous event; but is attributed to God by an anthropopathy, or speaking after the manner of men; for it is an act of the highest wisdom, and richest grace, to find out, that is, to pick and appoint, in council and... 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