Edward Irving wrote, ''Every angel of joy and of sorrow wept as he passed over David's heart; and the hearts of 100 men strove and struggled together within the narrow continent of his single heart.'' And James H. Brooks said that the Psalms ''describe so largely in prophecy the inner life of the Lord Jesus Christ, who was in all points tempted like as we are, yet without sin; and unless that fact is kept constantly in view, the Psalms cannot be read intelligently.''
Many of the psalms were written by David himself. At least one is said definitely to be a ''prayer of Moses'' (Psalm 90). Some were penned by Asaph, the chief musician in David's choir.