'City of David' in the Bible

But David captured the fortress of Zion (that is, the city of David).

So David lived in the fortress and called it the City of David. David built all around it, from the terrace inwards.

So David was no longer willing to bring the ark of the Lord to be with him in the City of David. David left it in the house of Obed-Edom the Gittite.

David was told, "The Lord has blessed the family of Obed-Edom and everything he owns because of the ark of God." So David went and joyfully brought the ark of God from the house of Obed-Edom to the City of David.

As the ark of the Lord entered the City of David, Saul's daughter Michal looked out the window. When she saw King David leaping and dancing before the Lord, she despised him.