Numbers 33:38-40

Revised Standard Version

³⁸ And Aaron the priest went up Mount Hor at the command of the Lord, and died there, in the fortieth year after the people of Israel had come out of the land of Egypt, on the first day of the fifth month. ³⁹ And Aaron was a hundred and twenty-three years old when he died on Mount Hor.

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