New Defender's Study Bible Notes
41:13 Amen, and Amen. Book I of the Psalms closes with this doxology. Note also Psalm 72:18-20; 89:52; 106:48; 145:21; 150:6. A similar doxology ends each of the five books in the Psalms.
Psalm 42 (title) sons of Korah. This is the first of eleven psalms referring to “the sons of Korah” (Psalm 42, 44–49, 84, 85, 87, 88). The sons of Korah were a Levitical singing group during the reigns of David and Solomon (I Chronicles 6:16,22-48).