2 Samuel 5:9

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

Ver. 9. So David dwelt in the fort.] After that he had slain all the old inhabitants, save one Araunah, saith Josephus, who afterwards proved his very friend.

And called it, The city of David.] As Constantine called Bizantium Constantinople, after his own name: making it likewise the metropolis and seat of the empire.

And David built round about, from Millo.] A certain tower or fortress. 2Ch 32:5 All the inside of the city David rebuilt, leaving the care of building the walls to Joab. 1Ch 11:8