II Samuel 5:7-9

Nevertheless David took the stronghold of Zion (that is, the City of David). Now David said on that day, “Whoever climbs up by way of the water shaft and defeats the Jebusites (the lame and the blind, who are hated by David’s soul), he shall be chief and captain.” Therefore they say, “The blind and the lame shall not come into the house.” Then David dwelt in the stronghold, and called it the City of David. And David built all around from the Millo and inward.