Deuteronomy 10:6 And the children of Israel took their journey from Beeroth of the children of Jaakan to Mosera: there Aaron died, and there he was buried; and Eleazar his son ministered in the priest's office in his stead.
[Patriarchs & Prophets pp. 426>427] The absence from the camp of the two great leaders, and the fact that they had been accompanied by Eleazar, who, it was well known, was to be Aaron's successor in holy office, awakened a feeling of apprehension, and their return was anxiously awaited. As the people looked about them, upon their vast congregation, they saw that nearly all the adults who left Egypt had perished in the wilderness. All felt a foreboding of evil as they remembered the sentence pronounced against Moses and Aaron. Some were aware of the object of that mysterious journey to the summit of Mount Hor, and their solicitude for their leaders was heightened by bitter memories and self-accusings.
The forms of Moses and Eleazar were at last discerned, slowly descending the mountainside, but Aaron was not with them. Upon Eleazar were the sacerdotal garments, showing that he had succeeded his father in the sacred office. As the people with heavy hearts gathered about their leader, Moses told them that Aaron had died in his arms upon Mount Hor, and that they there buried him. The congregation broke forth in mourning and lamentation, for they all loved Aaron, though they had so often caused him sorrow. “They mourned for Aaron thirty days, even all the house of Israel.”
Concerning the burial of Israel's high priest, the Scriptures give only the simple record, “There Aaron died, and there he was buried.” In what striking contrast to the customs of the present day was this burial, conducted according to the express command of God. In modern times the funeral services of a man of high position are often made the occasion of ostentatious and extravagant display. When Aaron died, one of the most illustrious men that ever lived, there were only two of his nearest friends to witness his death and to attend his burial. And that lonely grave upon Mount Hor was forever hidden from the sight of Israel. God is not honored in the great display so often made over the dead, and the extravagant expense incurred in returning their bodies to the dust.
The whole congregation sorrowed for Aaron, yet they could not feel the loss so keenly as did Moses. The death of Aaron forcibly reminded Moses that his own end was near; but short as the time of his stay on earth must be, he deeply felt the loss of his constant companion—the one who had shared his joys and sorrows, his hopes and fears, for so many long years. Moses must now continue the work alone; but he knew that God was his friend, and upon Him he leaned more heavily.
Numbers 33:38 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. 39 And Aaron was an hundred and twenty and three years old when he died in mount Hor.
May God add His blessing to the study of His word. "Good night" and God bless!