Numbers 33:37 WEB

³⁵  They traveled from Abronah, and encamped in Ezion Geber.

³⁶  They traveled from Ezion Geber, and encamped in the wilderness of Zin (the same is Kadesh).

³⁷  They traveled from Kadesh, and encamped in Mount Hor, in the edge of the land of Edom.

³⁸  Aaron the priest went up into Mount Hor at the commandment of Yahweh, and died there, in the fortieth year after the children of Israel were come out of the land of Egypt, in the fifth month, on the first day of the month.

³⁹  Aaron was one hundred twenty-three years old when he died in Mount Hor.