David dwelt in the fort - or stronghold, (as in 2 Samuel 5:7) i. e. eventually, when the buildings were completed, which may not have been for two or three years. Millo appears to have been a fortress of some kind, the northern defense of the city of David, and to have been a part of the original Canaanite defenses of Zion, as appears probable also from there having been a fortress called the house of Millo in the Canaanite city of Shechem. (Judges 9:6 note, and 2 Samuel 9:1-13.) Millo may be the native name. Some identify it with the great platform called the Haram es Sherif.
David built round about - Probably meaning built his own house and other houses and streets, all, in short, that caused it to be coiled the city of David. (Compare 1 Chronicles 11:8.) The buildings were within, on the south of Millo, so as to be protected by it on the north, as they were east, west. and south, by the precipitous ravines.