Numbers 4:5-15
And when the camp sets forward, Aaron shall come, and his sons, and they shall take down the covering veil, and cover the ark of testimony with it:
Nave's Topical Index—AKJV

Numbers 18:1,5,7
And the LORD said to Aaron, You and your sons and your father's house with you shall bear the iniquity of the sanctuary: and you and your sons with you shall bear the iniquity of your priesthood.
Nave's Topical Index—AKJV