2 Chronicles 32:1-3

1 After these things, and this faithfulness, Sennacherib king of Assyria came, and entered into Judah, and encamped against the fortified cities, and thought to win them for himself.

2 When Hezekiah saw that Sennacherib had come, and that he was purposed to fight against Jerusalem,

3 he took counsel with his princes and his mighty men to stop the waters of the springs which were outside of the city; and they helped him.