2 Chronicles 32:2-4

2 When Hezekiah saw that Sennacherib had come and intended to wage war against Jerusalem,

3 he consulted with his officers and warriors about blocking the waters of the springs outside the city, and they supported him.

4 Many people assembled and blocked off all the springs and the raging wadi in the land saying, “Why should the kings of Assyria come and find plenty of water?”