³⁸ It was at Mount Hor that Aaron the priest went up the mountain and died as the Eternal said he would. That was in the 40th year after the Israelites had left Egypt, and it happened on the first day of the fifth month. ³⁹ Aaron was 123 years old when he died on Mount Hor. ⁴⁰ That was also when the Canaanite king of Arad, from the Negev region, caught wind of the Israelites’ arrival and attacked them.