'City of David' in the Bible

Nevertheless David took the stronghold of Zion; the same is the city of David.

And David dwelt in the stronghold, and called it the city of David. And David built round about from Millo and inward.

So David would not remove the ark of LORD to him into the city of David, but David carried it aside into the house of Obed-edom the Gittite.

And it was told king David, saying, LORD has blessed the house of Obed-edom, and all that pertains to him, because of the ark of God. And David went and brought up the ark of God from the house of Obed-edom into the city of David w

And it was so, as the ark of LORD came into the city of David, that Michal the daughter of Saul looked out at the window, and saw king David leaping and dancing before LORD, and she despised him in her heart.