Albert Barnes Commentary 1 Kings 8:4

"And they brought up the ark of Jehovah, and the tent of meeting, and all the holy vessels that were in the Tent; even these did the priests and the Levites bring up." — 1 Kings 8:4 (ASV)

And the tabernacle of the congregation - This was not the tented structure erected for the ark on Mount Zion by David (2 Samuel 6:17), but the original tabernacle made by Moses, which had until now remained at Gibeon. The tabernacle and its holy vessels were probably placed in the treasury.