In 2-Chronicles 5:4, ""the Levites" took up the ark;" and by the Law the ark was the special charge of the Kohathites Numbers 3:31; Numbers 4:15. But all priests were Levites Joshua 3:3, though all Levites were not priests. And as Joshua had done Joshua 3:6; Joshua 6:6, so Solomon called upon the priests to bear the holy structure, allowing to mere Levites only the inferior honor of helping to transport the tabernacle and the vessels of the sanctuary.

And all the elders of Israel came,.... To Zion, the city of David:
and the priests took up the ark; from thence; in 2-Chronicles 5:4 it is said the Levites did it, whose business it was, Deuteronomy 31:25, and so the priests might be called; for every priest was a Levite, though every Levite was not a priest, and the priests did at all times bear the ark; see Joshua 3:15.

The priests - For although the Levites might do this, Numbers 4:15, yet the priests did it at this time, for the greater honour of the solemnity; and because the Levites might not enter into the holy - place, much less into the holy of holies, where it was to be placed, into which the priests themselves might not have entered, if the high - priest alone could have done it.