The book of Psalms is a collection of Hebrew poems and songs and sits in the poetic books of the Old Testament; it has 150 chapters in the King James Version.
Psalms is traditionally attributed to David. The Psalms include songs of praise, lament, thanksgiving, and prayer; many are traditionally attributed to David, and the book as a whole contains the well-known Psalm 23 and Psalm 91. A well-known passage from this book is Psalm 23. Read the full book at Psalms.