TSK · 1 Chronicles 24:2

He said to Moses, "Come up to Yahweh, you, and Aaron, Nadab, and Abihu, and seventy of the elders of Israel; and worship from a distance.

You shall clothe them with belts, Aaron and his sons, and bind headbands on them: and they shall have the priesthood by a perpetual statute: and you shall consecrate Aaron and his sons.

Moses spoke to Aaron, and to Eleazar and to Ithamar, his sons who were left, "Take the meal offering that remains of the offerings of Yahweh made by fire, and eat it without yeast beside the altar; for it is most holy;

Nadab and Abihu died before Yahweh, when they offered strange fire before Yahweh, in the wilderness of Sinai, and they had no children. Eleazar and Ithamar ministered in the priest's office in the presence of Aaron their father.

You and your sons with you shall keep your priesthood for everything of the altar, and for that within the veil; and you shall serve: I give you the priesthood as a service of gift: and the stranger who comes near shall be put to death."