In one of his commentaries, John Calvin calls the psalms, “an anatomy of all the parts of the soul,” because he believed that there was no human emotion that can’t be found within this collection of poetry. And he’s right: themes range the gamut from ecstatic joy to sorrowful remorse to righteous anger. In fact, many of the psalms incorporate several emotions all together at once: lament, repentance, thanksgiving, and praise all in one convenient package.