At that time Solomon assembled in Jerusalem the elders of Israel—all the tribal heads and family leaders of the Israelites—to bring up the ark of the covenant of the LORD from Zion, the City of David.
This agrees with what we had Kg1 8:2, etc., where an account was given of the solemn introduction of the ark into the new-erected temple. 1. There needed no great solemnity for the bringing in of the dedicated things, Ch2 5:1.
Commenting on 2 Chronicles 5:1-10
BRINGING UP OF THE ARK OF THE COVENANT. (Ch2 5:2-13) Then Solomon assembled . . . in the feast which was in the seventh month--The feast of the dedication of the temple was on the eighth day of that month. This is related, word for word, the same as in Kg1 8:1-10.
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. (a) Read .