Numbers 20:25-27

²⁵Take Aaron and his son with him, and bring them up into mount Hor:

²⁶And when thou hast stripped the father of his vesture, thou shalt vest therewith Eleazar his son: Aaron shall be gathered to his people, and die there.

²⁷Moses did as the Lord had commanded: and they went up into mount Hor before all the multitude.