the Levites toot up. These were the bearers, but the priests (being Levites also) brought it into the house (as stated in 2 Chronicles 5:7 and 1 Kings 8:3). Hence, in 2 Chronicles 5:5 they are called "the priests and the Levites". See note on Deuteronomy 17:9.
Related Commentaries of 2 Chronicles 5:4
2 Chronicles 5:4
4 And all the elders of Israel came; and the Levites took up the ark.