Original Verse:
Isaiah Chapter 22 Verse 9And ye saw the breaches of the city of David, that they were many; and ye gathered together the waters of the lower pool;

Reference Verses:
2nd Kings Chapter 20 Verse 20Now the rest of the acts of Hezekiah, and all his might, and how he made the pool, and the conduit, and brought water into the city, are they not written in the book of the chronicles of the kings of Judah?
2nd Chronicles Chapter 32 Verse 4So there was gathered much people together, and they stopped all the fountains, and the brook that flowed through the midst of the land, saying, Why should the kings of Assyria come, and find much water?