2 Samuel 5:7-9

7Nevertheless, David captured the fortress of Zion (that is, the City of David). 8On that day he said, “Whoever attacks the Jebusites must use the water shaft to reach the lame and blind who are despised by David.1” That is why it is said, “The blind and the lame will never enter the palace.”

9So David took up residence in the fortress and called it the City of David. He built it up all the way around, from the supporting terraces2 inward.