Numbers 20:23-26
20:23 And the Lord spoke to Moses and Aaron in Mount Hor, by the border of the land of Edom. He said:
20:24 “Aaron will be gathered to his ancestors, for he will not enter into the land I have given to the Israelites because both of you rebelled against my word at the waters of Meribah.
20:25 Take Aaron and Eleazar his son, and bring them up on Mount Hor.
20:26 Remove Aaron’s priestly garments and put them on Eleazar his son, and Aaron will be gathered to his ancestors and will die there.”