And when the camp setteth forward, Aaron and his sons shall go in, and they shall take down the veil of separation and cover the ark of testimony with it;

But thou and thy sons with thee shall attend to your priesthood for all that concerneth the altar, and for that which is inside the veil; and ye shall perform the service: I give you your priesthood as a service of gift, and the stranger that cometh near shall be put to death.