2 Chronicles 32:3-5

3 and he taketh counsel with his heads and his mighty ones, to stop the waters of the fountains that [are] at the outside of the city — and they help him,

4 and much people are gathered, and they stop all the fountains and the brook that is rushing into the midst of the land, saying, ‘Why do the kings of Asshur come, and have found much water?’

5 And he strengtheneth himself, and buildeth the whole of the wall that is broken, and causeth [it] to ascend unto the towers, and at the outside of the wall another, and strengtheneth Millo, [in] the city of David, and maketh darts in abundance, and shields.