From John Piper’s sermon, “Songs that Shape the Heart and Mind” (5/25/08):

“The Psalms, more intentionally than any other book of the Bible, is designed to carry, express, and shape our emotions, to give vent to them—all of them, and shape them, to reign them in, and to free them up, to explode them, and to kill them when they should be killed. It is an amazing gift to the Church. … The Psalms are songs and poems, and songs and poems exist because something more should happen to us than doctrinal refinement.”