Exodus 29:9

And thou shalt gird them with girdles, Aaron and his sons, and bind head-tires on them: and they shall have the priesthood by a perpetual statute: and thou shalt consecrate Aaron and his sons.

Numbers 18:7

And thou and thy sons with thee shall keep your priesthood for everything of the altar, and for that within the veil; and ye shall serve: I give you the priesthood as a service of gift: and the stranger that cometh nigh shall be put to death.

Leviticus 8:22-28

And he presented the other ram, the ram of consecration: and Aaron and his sons laid their hands upon the head of the ram.

Exodus 28:1

And bring thou near unto thee Aaron thy brother, and his sons with him, from among the children of Israel, that he may minister unto me in the priest's office, even Aaron, Nadab and Abihu, Eleazar and Ithamar, Aaron's sons.

Exodus 28:40-41

And for Aaron's sons thou shalt make coats, and thou shalt make for them girdles, and head-tires shalt thou make for them, for glory and for beauty.

Exodus 32:29

And Moses said, Consecrate yourselves to-day to Jehovah, yea, every man against his son, and against his brother; that he may bestow upon you a blessing this day.

Exodus 40:15

and thou shalt anoint them, as thou didst anoint their father, that they may minister unto me in the priest's office: and their anointing shall be to them for an everlasting priesthood throughout their generations.

Leviticus 8:33

And ye shall not go out from the door of the tent of meeting seven days, until the days of your consecration be fulfilled: for he shall consecrate you seven days.

Numbers 3:10

And thou shalt appoint Aaron and his sons, and they shall keep their priesthood: and the stranger that cometh nigh shall be put to death.

Numbers 16:10

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

Numbers 16:35

And fire came forth from Jehovah, and devoured the two hundred and fifty men that offered the incense.

Numbers 16:40

to be a memorial unto the children of Israel, to the end that no stranger, that is not of the seed of Aaron, come near to burn incense before Jehovah; that he be not as Korah, and as his company: as Jehovah spake unto him by Moses.

Numbers 25:13

and it shall be unto him, and to 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, to stand to minister in the name of Jehovah, him and his sons for ever.

Hebrews 5:4-5

And no man taketh the honor unto himself, but when he is called of God, even as was Aaron.

Hebrews 5:10

named of God a high priest after the order of Melchizedek.

Hebrews 7:11-14

Now if there was perfection through the Levitical priesthood (for under it hath the people received the law), what further need was there that another priest should arise after the order of Melchizedek, and not be reckoned after the order of Aaron?

Hebrews 7:23-28

And they indeed have been made priests many in number, because that by death they are hindered from continuing:

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 bring thou near unto thee Aaron thy brother, and his sons with him, from among the children of Israel, that he may minister unto me in the priest's office, even Aaron, Nadab and Abihu, Eleazar and Ithamar, Aaron's sons.
Numbers 16:10
and that he hath brought thee near, and all thy brethren the sons of Levi with thee? and seek ye the priesthood also?
Numbers 18:7
And thou and thy sons with thee shall keep your priesthood for everything of the altar, and for that within the veil; and ye shall serve: I give you the priesthood as a service of gift: and the stranger that cometh nigh shall be put to death.
Hebrews 5:4
And no man taketh the honor unto himself, but when he is called of God, even as was Aaron.
Hebrews 7:11
Now if there was perfection through the Levitical priesthood (for under it hath the people received the law), what further need was there that another priest should arise after the order of Melchizedek, and not be reckoned after the order of Aaron?

American Standard Version Public Domain