'City of David' in the Bible

The inhabitants of Jebus said to David, “You shall not enter here.” Nevertheless David captured the stronghold of Zion (that is, the city of David).

Then David dwelt in the stronghold; therefore it was called the city of David.

So David did not take the ark with him to the city of David, but took it aside to the house of Obed-edom the Gittite.

Now David built houses for himself in the city of David; and he prepared a place for the ark of God and pitched a tent for it.

It happened when the ark of the covenant of the Lord came to the city of David, that Michal the daughter of Saul looked out of the window and saw King David leaping and celebrating; and she despised him in her heart.