Aaron: Descendants of, Ordained Priests Forever
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Exodus 28:40–43
Make tunics, sashes, and headbands for Aaron’s sons, to give them glory and splendor. / After you put these garments on your brother Aaron and his sons, anoint them, ordain them, and consecrate them so that they may serve Me as priests. / Make linen undergarments to cover their bare flesh, extending from waist to thigh.
Exodus 29:9
Wrap the sashes around Aaron and his sons and tie headbands on them. The priesthood shall be theirs by a permanent statute. In this way you are to ordain Aaron and his sons.
Numbers 3:3
These were Aaron’s sons, the anointed priests, who were ordained to serve as priests.
Numbers 18:1
So the LORD said to Aaron, “You and your sons and your father’s house must bear the iniquity involving the sanctuary. And you and your sons alone must bear the iniquity involving your priesthood.
1 Chronicles 23:13
The sons of Amram: Aaron and Moses. Aaron and his descendants were set apart forever to consecrate the most holy things, to burn incense before the LORD, to minister before Him, and to pronounce blessings in His name forever.
2 Chronicles 26:18
They took their stand against King Uzziah and said, “Uzziah, you have no right to offer incense to the LORD. Only the priests, the descendants of Aaron, are consecrated to burn incense. Leave the sanctuary, for you have acted unfaithfully; you will not receive honor from the LORD God.”