When King Hezekiah of Judah sees that Sennacherib of Assyria is coming in war, he has springs and a brook outside Jerusalem stopped to keep water from the Assyrians. (“So there was gathered much people together, who stopped all the fountains, and the brook that ran through the midst of the land, saying, Why should the kings of Assyria come, and find much water” 2 Chronicles 32:1″4).