'City of David' in the Bible

But David took the stronghold of Zion, which is the city of David.

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

So David would not bring the ark of Jehovah home unto himself 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, Jehovah has blessed the house of Obed-Edom, and all that is his, 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 with joy.

And as the ark of Jehovah came into the city of David, Michal the daughter of Saul looked through a window, and saw king David leaping and dancing before Jehovah; and she despised him in her heart.