The story of King Hezekiah and King Sennacherib, 2 Kings 18-19 and 2 Chronicles 32:1-23. When Sennacherib sent his army to conquer Jerusalem, he sent a message with them: the God of Israel was insignificant. Sennacherib's great sin was unbelief, a direct contrast to Hezekiah's unshakeable belief in the God of Israel. God answered faithful Hezekiah s prayer and sent an angel to destroy the Assyrian army gathered around Jerusalem all 185,000 of them, all at the same time.