22 The whole community of Israel left Kadesh and arrived at Mount Hor. 23 There, on the border of the land of Edom, the Lord said to Moses and Aaron, 24 "The time has come for Aaron to join his ancestors in death. He will not enter the land I am giving the people of Israel, because the two of you rebelled against my instructions concerning the water at Meribah. 25 Now take Aaron and his son Eleazar up Mount Hor. 26 There you will remove Aaron's priestly garments and put them on Eleazar, his son. Aaron will die there and join his ancestors." 27 So Moses did as the Lord commanded. The three of them went up Mount Hor together as the whole community watched. 28 At the summit, Moses removed the priestly garments from Aaron and put them on Eleazar, Aaron's son. Then Aaron died there on top of the mountain, and Moses and Eleazar went back down. 29 When the people realized that Aaron had died, all Israel mourned for him thirty days.
Matthew Henry's Commentary on Numbers 20:22-29
Commentary on Numbers 20:22-29
(Read Numbers 20:22-29)
God bids Aaron prepare to die. There is something of displeasure in these orders. Aaron must not enter Canaan, because he had failed in his duty at the waters of strife. There is much of mercy in them. Aaron, though he dies for his transgression, dies with ease, and in honour. He is gathered to his people, as one who dies in the arms of Divine grace. There is much significancy in these orders. Aaron must not enter Canaan, to show that the Levitical priesthood could make nothing perfect; that must be done by bringing in a better hope. Aaron submits, and dies in the method and manner appointed; and, for aught that appears, with as much cheerfulness as if he had been going to bed. It was a great satisfaction to Aaron to see his son, who was dear to him, preferred; and his office preserved and secured: especially, to see in this a figure of Christ's everlasting priesthood. A good man would desire, if it were the will of God, not to outlive his usefulness. Why should we covet to continue any longer in this world, than while we may do some service in it for God and our generation?