'City of David' in the Bible

And David captureth the fortress of Zion, it is the city of David.

And David dwelleth in the fortress, and calleth it -- City of David, and David buildeth round about, from Millo and inward,

And David hath not been willing to turn aside unto himself the ark of Jehovah, to the city of David, and David turneth it aside to the house of Obed-Edom the Gittite,

And it is declared to king David, saying, 'Jehovah hath blessed the house of Obed-Edom, and all that he hath, because of the ark of God;' and David goeth and bringeth up the ark of God from the house of Obed-Edom to the city of David with joy.

and it hath come to pass, the ark of Jehovah hath come in to the city of David, and Michal daughter of Saul, hath looked through the window, and seeth king David moving and dancing before Jehovah, and despiseth him in her heart.