Jamieson, Fausset and Brown on Daniel 4:26

26. thou shalt have known, &c.--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" (Mt 4:17; Greek, "kingdom of the heavens") is a manifold organization, composed of various orders of angels, under the Most High (Ep 1:20, 21; 3:10; Col 1:16).