And the tabernacle of the congregation - Not the tented structure erected for the ark on Mount Zion 2 Samuel 6:17 by David, but the original tabernacle made by Moses, which had hitherto remained at Gibeon (margin reference). The tabernacle and its holy vessels were probably placed in the treasury.
Related Commentaries of 1 Kings 8:4
1 Kings 8:4
4 And they brought up the ark of the LORD, and the tabernacle of the congregation, and all the holy vessels that were in the tabernacle, even those did the priests and the Levites bring up.