2 Chronicles 32:1-3

1 Sennacherib Threatens Jerusalem After these things and these acts of faithfulness, Sennacherib king of Assyria came to Judah and encamped against the fortified cities thinking that he would break through them for himself.

2 When Hezekiah observed that Sennacherib had come and that he turned to war against Jerusalem,

3 he consulted with his officials and military men to stop up the waters of the springs that were outside the city, and they helped in this.