"Wilt not thou . . . ? Figure of Speech. Erotesis.App-6.
In the light of the living = in resurrection life. Hence the title "Michtam". Compare Psalm 16, and other Michtam Psalms. See also: Job_33:30; and Psa_116:8, Psa_116:9; where it is "land of the living".
To the chief Musician. See App-64.
Al-taschith = Destroy not. See App-65. The words of David in 1Sa_26:9. 2Sa_24:16, 2Sa_24:17. Same word as in 2Sa_1:14. Isa_65:8. Compare 1Ch_21:12, 1Ch_21:15.