Jamieson, Fausset and Brown on Deuteronomy 28:36

36. The Lord shall bring thee, and thy king, &c.--This shows how widespread would be the national calamity; and at the same time how hopeless, when he who should have been their defender shared the captive fate of his subjects.

there shalt thou serve other gods, wood and stone--The Hebrew exiles, with some honorable exceptions, were seduced or compelled into idolatry in the Assyrian and Babylonish captivities (Jr 44:17-19). Thus, the sin to which they had too often betrayed a perverse fondness, a deep-rooted propensity, became their punishment and their misery.