The Psalms are prayers and hymns of the Bible par excellence. Uttered in praise, joy, sorrow, and despair; spoken or sung in private and in public by laypeople, kings, poets, and priests; coming from both the righteous and repentant sinners, the Psalms have served as the prayer book and the hymnbook to generations of believers. The book of Psalms owes its distinct role to the fact that while most of the Bible speaks to us, the Psalms speak for us and with us. The Psalms are a source of blessing, hope, and revival, a guide for both self-reflection and reflection on God’s greatness, liberating when one cries out of the depths, and captivating for a renewed surrender to God. It is thus not surprising that many people find the Psalms resonating with their emotions and experiences and adopt them as their own prayers. Luther poignantly speaks of the Psalms: “Where can one find nobler words to express joy than in the Psalms of praise or gratitude? In them you can see into the hearts of all the saints as if you were looking at a lovely pleasure-garden, or were gazing into heaven. . . . Or where can one find more profound, more penitent, more sorrowful words in which to express grief than in the Psalms of lamentation? In these, you see into the hearts of all the saints as if you were looking at death or gazing into hell, so dark and obscure is the scene rendered by the changing shadows of the wrath of God.