Charles Ellicott Commentary 2 Samuel 22:29

"For thou art my lamp, O Jehovah; And Jehovah will lighten my darkness." — 2 Samuel 22:29 (ASV)

Thou art my lamp. — Compare to Psalms 27:1. The psalm changes the figure, thou wilt light my candle (margin, lamp). With this compare Psalms 132:17; 1 Kings 11:36; 1 Kings 15:4.