1 Chronicles 11:5-7

King James Version

⁵ And the inhabitants of Jebus said to David, Thou shalt not come hither. Nevertheless David took the castle of Zion, which is the city of David.

⁶ And David said, Whosoever smiteth the Jebusites first shall be chief and captain. So Joab the son of Zeruiah went first up, and was chief.

⁷ And David dwelt in the castle; therefore they called it the city of David.