1 Chronicles 15:14

And the priests will purify themselves and the Levites to bring up the ark of Jehovah God of Israel

Leviticus 10:3

And Moses will say to Aaron, This which Jehovah spake, saying, In drawing near me I will be consecrated, and before all the people I will be honored. And Aaron will be silent

2 Chronicles 29:15

And they will gather their brethren, and they will consecrate themselves, and they will come according to the command of the king in the words of Jehovah, to cleanse the house of Jehovah.

2 Chronicles 29:34

Only the priests were for fewness and they could not slaughter all the burnt-offerings: and their brethren the Levites will strengthen them till the finishing of the work, and till the priests shall consecrate themselves: for the Levites being upright of heart to consecrate themselves more than the priests.

Joel 2:16-17

Gather the people, consecrate the convocation, assemble the old men, gather the children and those sucking the breasts: the bridegroom shall come forth from his chamber and the bride from her nuptial couch.

Treasury of Scripture Knowledge

Summary

So the priests and the Levites sanctified themselves to bring up the ark of the LORD God of Israel.

Bible References

Sanctified

Leviticus 10:3
And Moses will say to Aaron, This which Jehovah spake, saying, In drawing near me I will be consecrated, and before all the people I will be honored. And Aaron will be silent
2 Chronicles 29:15
And they will gather their brethren, and they will consecrate themselves, and they will come according to the command of the king in the words of Jehovah, to cleanse the house of Jehovah.
Joel 2:16
Gather the people, consecrate the convocation, assemble the old men, gather the children and those sucking the breasts: the bridegroom shall come forth from his chamber and the bride from her nuptial couch.