The book of Psalms has been and still is the irreplaceable devotional guide, prayer book, and hymnal of the people of God. The Hebrew title is “the book of praises” (tehillim). The Greek translation of the Old Testament (the Septuagint) used psalmos for tehillim; the word means “a song sung to the accompaniment of a stringed instrument.” The Vulgate followed the Septuagint and used psalmorum, from the Latin psalterium, “a stringed instrument.” The King