My sons, do not now be negligent, for the LORD has chosen you to stand in his presence, to minister to him and to be his ministers and make offerings to him."
The sons of Amram: Aaron and Moses. Aaron was set apart to dedicate the most holy things, that he and his sons forever should make offerings before the LORD and minister to him and pronounce blessings in his name forever.
Did I choose him out of all the tribes of Israel to be my priest, to go up to my altar, to burn incense, to wear an ephod before me? I gave to the house of your father all my offerings by fire from the people of Israel.
to be a reminder to the people of Israel, so that no outsider, who is not of the descendants of Aaron, should draw near to burn incense before the LORD, lest he become like Korah and his company -- as the LORD said to him through Moses.
But when he was strong, he grew proud, to his destruction. For he was unfaithful to the LORD his God and entered the temple of the LORD to burn incense on the altar of incense.
But Aaron and his sons made offerings on the altar of burnt offering and on the altar of incense for all the work of the Most Holy Place, and to make atonement for Israel, according to all that Moses the servant of God had commanded.