II Chronicles 32:1-8

After these deeds of faithfulness, Sennacherib king of Assyria came and entered Judah; he encamped against the fortified cities, thinking to win them over to himself. And when Hezekiah saw that Sennacherib had come, and that his purpose was to make war against Jerusalem, he consulted with his leaders and commanders to stop the water from the springs which were outside the city; and they helped him. Thus many people gathered together who stopped all the springs and the brook that ran through the land, saying, “Why should the kings of Assyria come and find much water?” And he strengthened himself, built up all the wall that was broken, raised it up to the towers, and built another wall outside; also he repaired the Millo in the City of David, and made weapons and shields in abundance. Then he set military captains over the people, gathered them together to him in the open square of the city gate, and gave them encouragement, saying, “Be strong and courageous; do not be afraid nor dismayed before the king of Assyria, nor before all the multitude that is with him; for there are more with us than with him. With him is an arm of flesh; but with us is the LORD our God, to help us and to fight our battles.” And the people were strengthened by the words of Hezekiah king of Judah.