Deuteronomy 10:8

10:8 At that time the Lord set apart the tribe of Levi to carry the ark of the Lord’s covenant, to stand before the Lord to serve him, and to formulate blessings in his name, as they do to this very day.

Deuteronomy 17:12

17:12 The person who pays no attention to the priest currently serving the Lord your God there, or to the verdict – that person must die, so that you may purge evil from Israel.

Exodus 28:1-14

The Clothing of the Priests

28:1 “And you, bring near to you your brother Aaron and his sons with him from among the Israelites, so that they may minister as my priests – Aaron, Nadab and Abihu, Eleazar and Ithamar, Aaron’s sons. 28:2 You must make holy garments for your brother Aaron, for glory and for beauty. 28:3 You are to speak to all who are specially skilled, whom I have filled with the spirit of wisdom, so that they may make Aaron’s garments to set him apart to minister as my priest. 28:4 Now these are the garments that they are to make: a breastpiece, an ephod, a robe, a fitted tunic, a turban, and a sash. They are to make holy garments for your brother Aaron and for his sons, that they may minister as my priests. 28:5 The artisans are to use the gold, blue, purple, scarlet, and fine linen.

28:6 “They are to make the ephod of gold, blue, purple, scarlet, and fine twisted linen, the work of an artistic designer. 28:7 It is to have two shoulder pieces attached to two of its corners, so it can be joined together. 28:8 The artistically woven waistband of the ephod that is on it is to be like it, of one piece with the ephod, of gold, blue, purple, scarlet, and fine twisted linen.

28:9 “You are to take two onyx stones and engrave on them the names of the sons of Israel, 28:10 six of their names on one stone, and the six remaining names on the second stone, according to the order of their birth. 28:11 You are to engrave the two stones with the names of the sons of Israel with the work of an engraver in stone, like the engravings of a seal; you are to have them set in gold filigree settings. 28:12 You are to put the two stones on the shoulders of the ephod, stones of memorial for the sons of Israel, and Aaron will bear their names before the Lord on his two shoulders for a memorial. 28:13 You are to make filigree settings of gold 28:14 and two braided chains of pure gold, like a cord, and attach the chains to the settings.

Numbers 3:10

3:10 So you are to appoint Aaron and his sons, and they will be responsible for their priesthood; but the unauthorized person who comes near must be put to death.”

Numbers 16:5

16:5 Then he said to Korah and to all his company, “In the morning the Lord will make known who are his, and who is holy. He will cause that person to approach him; the person he has chosen he will cause to approach him.

Numbers 16:9-10

16:9 Does it seem too small a thing to you that the God of Israel has separated you from the community of Israel to bring you near to himself, to perform the service of the tabernacle of the Lord, and to stand before the community to minister to them? 16:10 He has brought you near and all your brothers, the sons of Levi, with you. Do you now seek the priesthood also?

Numbers 17:5-9

17:5 And the staff of the man whom I choose will blossom; so I will rid myself of the complaints of the Israelites, which they murmur against you.”

17:6 So Moses spoke to the Israelites, and each of their leaders gave him a staff, one for each leader, according to their tribes – twelve staffs; the staff of Aaron was among their staffs. 17:7 Then Moses placed the staffs before the Lord in the tent of the testimony.

17:8 On the next day Moses went into the tent of the testimony – and the staff of Aaron for the house of Levi had sprouted, and brought forth buds, and produced blossoms, and yielded almonds! 17:9 So Moses brought out all the staffs from before the Lord to all the Israelites. They looked at them, and each man took his staff.

Numbers 25:13

25:13 So it will be to him and his descendants after him a covenant of a permanent priesthood, because he has been zealous for his God, and has made atonement for the Israelites.’”