thou shalt have known, etc. - a promise of spiritual grace to him, causing the judgment to humble, not harden, his heart.
heavens do rule - The plural is used, as addressed to Nebuchadnezzar, the head of an organized earthly kingdom, with various principalities under the supreme ruler. So “the kingdom of heaven” (Mat 4:17; Greek, “kingdom of the heavens”) is a manifold organization, composed of various orders of angels, under the Most High (Eph 1:20, Eph 1:21; Eph 3:10; Col 1:16).