Numbers 20:22-29

²²And they went forward from Rekem, and all the congregation of the children of Israel came to Mount Hor.

²³And the Lord spake to Mosheh and to Aharon at Mount Hor, by the coast of the land of Edom, saying:

²⁴Aharon shall be gathered unto his people; for he shall not enter into the land which I have given to the children of Israel, because you rebelled against My Word at the waters of strife.

²⁵Take Aharon and Elazar his son, and bring them up to Mount Hor;

²⁶And strip Aharon of his vestments, and put them upon Elazar his son; and Aharon shall be gathered (to his people), and shall die there.

²⁷And Mosheh did as the Lord commanded, and they went up to Mount Hor before the eyes of all the congregation.

²⁸And Mosheh took off his garments from Aharon, and put them upon Elazar his son. And Aharon died there, on the summit of the mount. And Mosheh and Elazar came down from the mount.

²⁹And all the congregation saw that Aharon was dead; and all the house of Israel bewailed Aharon thirty days.