2 Chronicles 32:4, 30, 32

They gathered a large group of people who blocked all the springs and the stream that flowed through the land. “Why should the kings of Assyria come and find plenty of water?” they said.

It was Hezekiah who blocked the upper outlet of the Gihon spring and channeled the water down to the west side of the City of David. He succeeded in everything he undertook.

The other events of Hezekiah’s reign and his acts of devotion are written in the vision of the prophet Isaiah son of Amoz in the book of the kings of Judah and Israel.