1 Chronicles 11:6

4 And David and all Israel went to Jerusalem, that is, Jebus, where the Jebusites were, the inhabitants of the land.

5 The inhabitants of Jebus said to David, "You will not come in here." Nevertheless, David took the stronghold of Zion, that is, the city of David.

6 David said, "Whoever strikes the Jebusites first shall be chief and commander." And Joab the son of Zeruiah went up first, so he became chief.

7 And David lived in the stronghold; therefore it was called the city of David.

8 And he built the city all around from the Millo in complete circuit, and Joab repaired the rest of the city.