Numbers 20:23-26

And the LORD spake unto Moses and Aaron in mount Hor, by the coast of the land of Edom, saying, Aaron shall be gathered unto his people: for he shall not enter into the land which I have given unto the children of Israel, because ye rebelled against my word at the water of Meribah. {word: Heb. mouth} Take Aaron and Eleazar his son, and bring them up unto mount Hor: And strip Aaron of his garments, and put them upon Eleazar his son: and Aaron shall be gathered {unto his people}, and shall die there.