2 Samuel 5:7-9

7Yet David did capture the stronghold of Zion, that is, the city of David.

8He said that day, “Whoever attacks the Jebusites must go through the water shaft to reach the lame and the blind who are despised by David.” For this reason it is said, “The blind and the lame will never enter the house.”

9David took up residence in the stronghold, which he named the city of David. He built it up all the way around from the supporting terraces inward.