Numbers 33:37-42

And they removed from Kadesh, and pitched in mount Hor, in the edge of the land of Edom. And Aaron the priest went up into mount Hor at the commandment of the LORD, and died there, in the fortieth year after the children of Israel were come out of the land of Egypt, in the first day of the fifth month. And Aaron was an hundred and twenty and three years old when he died in mount Hor. And king Arad the Canaanite, which dwelt in the south in the land of Canaan, heard of the coming of the children of Israel. And they departed from mount Hor, and pitched in Zalmonah. And they departed from Zalmonah, and pitched in Punon.