Numbers 4:5 in the King James Version
And when the camp setteth forward, Aaron shall come, and his sons, and they shall take down the covering vail, and cover the ark of testimony with it:
Context
4 “This is the service of the sons of Kohath in the Tent of Meeting, regarding the most holy things.
5 When the camp moves forward, Aaron shall go in with his sons; and they shall take down the veil of the screen, cover the ark of the Testimony with it,
6 put a covering of sealskin on it, spread a blue cloth over it, and put in its poles.