2 Samuel 5:5-9

5In Hebron he reigned over Judah seven years and six months, and in Jerusalem he reigned thirty-three years over all Israel and Judah.

6Now the king and his men marched to Jerusalem against the Jebusites who inhabited the land. The Jebusites said to David: “You will never get in here. Even the blind and lame can repel you.” For they thought, “David cannot get in here.”

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.