John Gills Exposition of the Bible Commentary - Psalms 109:24
My knees are weak through fasting ,..... Either voluntary or forced, through want of food or refreshment; this was verified in Christ, when he kneeled and prayed, and his sweat was as it were great drops of blood falling to the ground; see Psalm 69:10 . And my flesh faileth of fatness ; or "for want of oil" F11 משמן δι' ελαιον , Sept. "propter oleum", V. L. "propter defectum olei", Eth. Arab. ; the radical moisture of his flesh being dried up like a potsherd, Psalm 22:15 . read more
Matthew Henry's Complete Commentary - Psalms 109:21-31
David, having denounced God's wrath against his enemies, here takes God's comforts to himself, but in a very humble manner, and without boasting. I. He pours out his complaint before God concerning the low condition he was in, which, probably, gave advantage to his enemies to insult over him: ?I am poor and needy, and therefore a proper object of pity, and one that needs and craves thy help.? 1. He was troubled in mind (Ps. 109:22): My heart is wounded within me, not only broken with outward... read more