Exodus 29:9

And thou shalt gird them with the girdle Aaron and his sons, and bind the high caps on them; and the priesthood shall be theirs for an everlasting statute; and thou shalt consecrate Aaron and his sons.

Numbers 18:7

But thou and thy sons with thee shall attend to your priesthood for all that concerneth the altar, and for that which is inside the veil; and ye shall perform the service: I give you your priesthood as a service of gift, and the stranger that cometh near shall be put to death.

Leviticus 8:22-28

And he presented the second ram, the ram of consecration; and Aaron and his sons laid their hands on the head of the ram;

Exodus 28:1

And thou shalt take thee Aaron thy brother, and his sons with him, from among the children of Israel, that he may serve me as priest Aaron, Nadab and Abihu, Eleazar and Ithamar, Aaron's sons.

Exodus 28:40-41

And for Aaron's sons thou shalt make vests; and thou shalt make for them girdles; and high caps shalt thou make for them, for glory and for ornament.

Exodus 32:29

And Moses said, Consecrate yourselves to-day to Jehovah, yea, every man with his son, and with his brother, and bring on yourselves a blessing to-day.

Exodus 40:15

And thou shalt anoint them, as thou didst anoint their father, that they may serve me as priests. And their anointing shall be to them an everlasting priesthood throughout their generations.

Leviticus 8:33

And ye shall not go out from the entrance of the tent of meeting seven days, until the day when the days of your consecration are at an end: for seven days shall ye be consecrated.

Numbers 3:10

And Aaron and his sons shalt thou appoint that they may attend to their priest's office; and the stranger that cometh near shall be put to death.

Numbers 16:10

that he has brought thee near, and all thy brethren the sons of Levi with thee; and seek ye now the priesthood also?

Numbers 16:35

And there came out a fire from Jehovah, and consumed the two hundred and fifty men that had presented incense.

Numbers 16:40

as a memorial to the children of Israel, that no stranger who is not of the seed of Aaron come near to burn incense before Jehovah, that he be not as Korah, and as his band, as Jehovah had said to him through Moses.

Numbers 25:13

And he shall have it, and his seed after him, the covenant of an everlasting priesthood; because he was jealous for his God, and made atonement for the children of Israel.

Deuteronomy 18:5

for Jehovah thy God hath chosen him out of all thy tribes, that he may stand to serve in the name of Jehovah, he and his sons continually.

Hebrews 5:4-5

And no one takes the honour to himself but as called by God, even as Aaron also.

Hebrews 5:10

addressed by God as high priest according to the order of Melchisedec.

Hebrews 7:11-14

If indeed then perfection were by the Levitical priesthood, for the people had their law given to them in connexion with it, what need was there still that a different priest should arise according to the order of Melchisedec, and not be named after the order of Aaron?

Hebrews 7:23-28

And they have been many priests, on account of being hindered from continuing by death;

Treasury of Scripture Knowledge

Summary

And thou shalt gird them with girdles, Aaron and his sons, and put the bonnets on them: and the priest's office shall be theirs for a perpetual statute: and thou shalt consecrate Aaron and his sons.

Bible References

The priest's

Exodus 28:1
And thou shalt take thee Aaron thy brother, and his sons with him, from among the children of Israel, that he may serve me as priest Aaron, Nadab and Abihu, Eleazar and Ithamar, Aaron's sons.
Numbers 16:10
that he has brought thee near, and all thy brethren the sons of Levi with thee; and seek ye now the priesthood also?
Numbers 18:7
But thou and thy sons with thee shall attend to your priesthood for all that concerneth the altar, and for that which is inside the veil; and ye shall perform the service: I give you your priesthood as a service of gift, and the stranger that cometh near shall be put to death.
Hebrews 5:4
And no one takes the honour to himself but as called by God, even as Aaron also.
Hebrews 7:11
If indeed then perfection were by the Levitical priesthood, for the people had their law given to them in connexion with it, what need was there still that a different priest should arise according to the order of Melchisedec, and not be named after the order of Aaron?