Numbers 33:37-41

37And they removed from Kadesh, and encamped in mount Hor, in the border of the land of Edom.

38And Aaron the priest went up mount Hor by the commandment of Jehovah, and died there, in the fortieth year after the children of Israel came out of the land of Egypt, in the fifth month, on the first of the month.

39And Aaron was a hundred and twenty-three years old when he died on mount Hor.

40And the Canaanite, the king of Arad who dwelt in the south in the land of Canaan, heard of the coming of the children of Israel.

41And they removed from mount Hor, and encamped in Zalmonah.