2 Samuel 5:4-6
4 David was 30 years old when he first became king, and he was king for 40 years; 5 he reigned in Hebron over Judah alone for 7½ years, and then he reigned over the united kingdom of Judah and Israel for 33 years.
6 At one point, David and his army marched to Jerusalem to fight the Jebusites who lived there. The Jebusites felt secure behind their walls and were sure David could not enter into the city. They jeered, “Even the blind and the lame could defend this city against you.”Read full chapter