Psalm 151 is a short psalm found in most copies of the Septuagint but not in the Masoretic Text of the Hebrew Bible. The title given to this psalm in the Septuagint indicates that it is , and no number is affixed to it: "This Psalm is ascribed to David and is outside the number. When he slew Goliath in single combat". It is also included in some manuscripts of the Peshitta. The psalm concerns the story of David and Goliath.