THE first of the five books contains forty-one psalms. All of them, except four, have the name "David" in the title. The four exceptions are Psalms 1 and 2, which may be considered introductory to the book; Psalm 10, which may be a continuation of Psalm 9 and therefore needs no separate heading; and Psalm 33. This last psalm, however, has the heading "Of David" in the Greek Version (the Septuagint). These references to David are sometimes given simply "Of David" or "A Psalm of David," or "For the leader with string instrument, a Psalm of David," etc. The verse at the end of the forty-first psalm reads: "Blessed be the Lord, the God of Israel, from everlasting to everlasting, Amen and Amen." This verse does not belong to Psalm 41 but is the doxology closing the entire first book.