Leviticus 10 · a question people ask
Why wasn't Aaron allowed to mourn his sons?
Moses told Aaron, Eleazar and Ithamar, "Don’t let the hair of your heads go loose, and don’t tear your clothes, so that you don’t die, and so that he will not be angry with all the congregation" (10:6). For staying at the door of the Tent, the reason given is their anointing: "You shall not go out from the door of the Tent of Meeting, lest you die; for the anointing oil of the LORD is on you" (10:7). Weeping wasn't forbidden to everyone: "let your brothers, the whole house of Israel, bewail the burning which the LORD has kindled" (10:6). Later Leviticus lets an ordinary priest defile himself for "his relatives that are near to him" (21:2), but the high priest "shall not let the hair of his head hang loose, or tear his clothes" (21:10), "for the crown of the anointing oil of his God is upon him" (21:12).
The verses
“Moses said to Aaron, and to Eleazar and to Ithamar, his sons, “Don’t let the hair of your heads go loose, and don’t tear your clothes, so that you don’t die, and so that he will not be angry with all the congregation; but let your brothers, the whole house of Israel, bewail the burning which the LORD has kindled. You shall not go out from the door of the Tent of Meeting, lest you die; for the anointing oil of the LORD is on you.” They did according to the word of Moses.”
“He poured some of the anointing oil on Aaron’s head, and anointed him, to sanctify him.”
“The LORD said to Moses, “Speak to the priests, the sons of Aaron, and say to them, ‘A priest shall not defile himself for the dead among his people, except for his relatives that are near to him: for his mother, for his father, for his son, for his daughter, for his brother, and for his virgin sister who is near to him, who has had no husband; for her he may defile himself.”
““‘He who is the high priest among his brothers, upon whose head the anointing oil is poured, and who is consecrated to put on the garments, shall not let the hair of his head hang loose, or tear his clothes. He must not go in to any dead body, or defile himself for his father or for his mother. He shall not go out of the sanctuary, nor profane the sanctuary of his God; for the crown of the anointing oil of his God is upon him. I am the LORD.”