SEV Biblia, Chapter 5:9
Y David moró en la fortaleza y le puso por nombre la Ciudad de David; y edificó alrededor, desde Millo para adentro.
John Gill's Bible Commentary
Ver. 9. So David dwelt in the fort , etc.] The strong hold of Zion, which he took: and called it the city of David ; from his own name, to keep up the memory of his taking it, and of his habitation in it: and David built round about, from Millo and inward ; built a wall about it, and enlarged the place, increased the buildings both within and without. Millo is supposed to be a ditch round the fort, full of water, from whence it had its name; or was a large hollow place which divided the fort from the lower city, and which afterwards Solomon filled up, and made it a level, and therefore is called so here by anticipation; though Jarchi says it was done by David. According to Dr. Lightfoot f91 , it was a part or Sion, or some hillock, east up against it on the west side; his first sense is best, Millo being no other than the fortress or citadel; which, as Josephus says f92 , David joined to the lower city, and made them one body, and erecting walls about it made Joab superintendent of them; and this was the “round about”, or circuit, which David made, reaching from Millo, or the citadel, to that again, which is meant by “inward”, or “to the house” f93 , as it should be rendered; that is, to the house of Millo, as in ( 2 Kings 12:20); and so it is said ( 1 Chronicles 11:8); that David built the city “from Millo round about”; that is, to the same place from whence he began f94 .
Matthew Henry Commentary
Verses 6-10 - The enemies of God's people are often very confident of their ow strength, and most secure when their day to fall draws nigh. But the pride and insolence of the Jebusites animated David, and the Lord God of hosts was with him. Thus in the day of God's power, Satan' strong-hold, the human heart, is changed into a habitation of God through the Spirit, and into a throne on which the Son of David rules and brings every thought into obedience to himself. May He thus come and claim, and cleanse, each of our hearts; and, destroying every idol may he reign there for ever!
Original Hebrew
וישׁב 3427 דוד 1732 במצדה 4686 ויקרא 7121 לה עיר 5892 דוד 1732 ויבן 1129 דוד 1732 סביב 5439 מן 4480 המלוא 4407 וביתה׃ 1004