2 Chronicles 32:1-3

1 After these faithful deeds, Sennacherib king of Assyria came and entered Judah. He laid siege to the fortified cities and intended to break into them.

2 Hezekiah saw that Sennacherib had come and that he planned war on Jerusalem,

3 so he consulted with his officials and his warriors about stopping up the waters of the springs that were outside the city, and they helped him.