As soon as David became king:
I Chronicles 11:3 Therefore came all the elders of Israel to the king to Hebron; and David made a covenant with them in Hebron before the LORD; and they anointed David king over Israel, according to the word of the LORD by Samuel.
The very first thing that he did was to take Zion:
I Chronicles 11:5 And the inhabitants of Jebus said to David, Thou shalt not come hither. Nevertheless David took the castle of Zion, which is the city of David.7 And David dwelt in the castle; therefore they called it the city of David.
II 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.That fort, the castle of Zion, called the city of David, after he took it, was high and very fortified area.That area is a small subsection of what would eventually grow to become the Jerusalem under Hezekiah, or new testament times.In that part, the city of David, is where David pitched a tabernacle and brought the ark of the covenant.
I Chronicles 15:1 And David made him houses in the city of David, and prepared a place for the ark of God, and pitched for it a tent.
II Samuel 6:12 And it was told king David, saying, The LORD hath blessed the house of Obededom, and all that pertaineth unto him, because of the ark of God. So David went and brought up the ark of God from the house of Obededom into the city of David with gladness.I Chronicles 16:1 So they brought the ark of God, and set it in the midst of the tent that David had pitched for it: and they offered burnt sacrifices and peace offerings before God.
Then, later, when son Solomon built the temple.They brought the ark out of the city of David, from mount Zion, where it was, to mount Moriah where the temple was built.
II Chronicles 3:1 Then Solomon began to build the house of the LORD at Jerusalem in mount Moriah, where the LORD appeared unto David his father, in the place that David had prepared in the threshingfloor of Ornan the Jebusite.
II Chronicles 5:1 Thus all the work that Solomon made for the house of the LORD was finished: and Solomon brought in all the things that David his father had dedicated; and the silver, and the gold, and all the instruments, put he among the treasures of the house of God.2 Then Solomon assembled the elders of Israel, and all the heads of the tribes, the chief of the fathers of the children of Israel, unto Jerusalem, to bring up the ark of the covenant of the LORD out of the city of David, which is Zion.
So, is it possible, that in these days, rather than to rebuild the temple on mount Moriah, what if the tabernacle of David, on mount Zion is raised back up for the ark of the covenant to be brought back to, like David did when he was first king?
Amos 9:11 In that day will I raise up the tabernacle of David that is fallen, and close up the breaches thereof; and I will raise up his ruins, and I will build it as in the days of old:
Yes, as time when on, the word Zion became synonymous for the entire built out are of Jerusalem. Also, there are the that then teach that mount Zion and mount Moriah are one in the same, but it looks like the ark was brought from the one to the other, in Solomon's day.What if the ark has been abiding with some, like the family of Obededom had been, and have been blest because of it.But maybe now is the time, like with David, to bring the ark to Zion?