Exposition

 I. Book 1 chs 1--41

 II. Book 2: chs. 42--72

In Book 1 we saw that all the psalms except 1, 2, 10, and 33 claimed David as their writer. It is likely that he wrote these four as well even though they do not bear his name. In Book 2 the titles identify David as the writer of 18 psalms (Pss. 51-65, 68-70). He may have written those bearing the notation, "of the sons of Korah"(Pss. 42, 44-49). The sons of Korah (cf. Num. 26:10-11) were musicians (1 Chron. 6:31-48). Some scholars believe David wrote these psalms for them to perform. Others believe the sons of Korah composed them. I think this is a less likely possibility because of the similarity between the content of these psalms and the ones David wrote. Asaph wrote Psalm 50, and Solomon composed Psalm 72. Psalms 43, 66, 67, and 71 are anonymous.

 I. Book 3: chs 73--89

A man or men named Asaph wrote 17 of the psalms in this book (Pss. 73-83). Other writers were the sons of Korah (Pss. 84-85, 87), David (Ps. 86), Heman (Ps. 88), and Ethan (Ps. 89). Asaph, Heman, and Ethan were musicians from the tribe of Levi who were contemporaries of David.

 IV. Book 4: chs. 90--106

Moses composed one of the psalms in this section of the Psalter (Ps. 90). David wrote two of them (Pss. 101 and 103). The remaining 14 are anonymous.

 V. Book 5: chs. 107--150

There are 44 psalms in this section of the Psalter. David composed 15 of these (108-110; 122; 124; 131; 133; 138-145), Solomon wrote one (127), and the remaining 28 are anonymous. Psalms 113-118 compose the so-called Egyptian Hallel, which the Jews used in their Passover (cf. Mark 14:26). Fifteen are Songs of Ascent (120-134), and five are Hallelor Hallelujah psalms (146-150).