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 And when Hezekiah saw that Sennacherib came, and that he intended to fight against Jerusalem,

3 he took counsel with his rulers and his mighty men to stop the waters of the fountains which were outside the city. And they helped him.