Isaiah 36:4

The Rabshakeh told the Judean officials to give Hezekiah-he did not call him a king-a message from "the great king," a title the Assyrian monarchs arrogantly claimed for themselves (cf. Isaiah 10:8; Isaiah 30:33). He questioned Hezekiah’s confidence that led him to rebel against Sennacherib. Clearly Sennacherib wanted the Judahites to know that he regarded Hezekiah as a minor chieftain incapable of resisting the massive power of the Assyrian Empire.