Hebrews 5:4

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

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 16:40

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.

1 Chronicles 23:13

The sons of Amram: Aaron and Moses; and Aaron was separated, that he should sanctify the most holy things, he and his sons, for ever, to burn incense before Jehovah, to minister unto him, and to bless in his name, for ever.

2 Chronicles 26:18

and they withstood Uzziah the king, and said unto him, It pertaineth not unto thee, Uzziah, to burn incense unto Jehovah, but to the priests the sons of Aaron, that are consecrated to burn incense: go out of the sanctuary; for thou hast trespassed; neither shall it be for thine honor from Jehovah God.

Numbers 16:5

and he spake unto Korah and unto all his company, saying, In the morning Jehovah will show who are his, and who is holy, and will cause him to come near unto him: even him whom he shall choose will he cause to come near unto him.

Numbers 3:3

These are the names of the sons of Aaron, the priests that were anointed, whom he consecrated to minister in the priest's office.

Numbers 16:7

and put fire in them, and put incense upon them before Jehovah to-morrow: and it shall be that the man whom Jehovah doth choose, he'shall be holy: ye take too much upon you, ye sons of Levi.

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 16:46-48

And Moses said unto Aaron, Take they censer, and put fire therein from off the altar, and lay incense thereon, and carry it quickly unto the congregation, and make atonement for them: for there is wrath gone out from Jehovah; the plague is begun.

Numbers 17:3-11

And thou shalt write Aaron's name upon the rod of Levi; for there shall be one rod for each head of their fathers houses.

Numbers 18:1-5

And Jehovah said unto Aaron, Thou and thy sons and thy fathers house with thee shall bear the iniquity of the sanctuary; and thou and thy sons with thee shall bear the iniquity of your priesthood.

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.

John 3:27

John answered and said, A man can receive nothing, except it have been given him from heaven.

Leviticus 8:2

Take Aaron and his sons with him, and the garments, and the anointing oil, and the bullock of the sin-offering, and the two rams, and the basket of unleavened bread;

Treasury of Scripture Knowledge

Summary

And no man taketh this honour unto himself, but he that is called of God, as was Aaron.

Bible References

General references

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.
Leviticus 8:2
Take Aaron and his sons with him, and the garments, and the anointing oil, and the bullock of the sin-offering, and the two rams, and the basket of unleavened bread;
Numbers 3:3
These are the names of the sons of Aaron, the priests that were anointed, whom he consecrated to minister in the priest's office.
Numbers 16:5
and he spake unto Korah and unto all his company, saying, In the morning Jehovah will show who are his, and who is holy, and will cause him to come near unto him: even him whom he shall choose will he cause to come near unto him.
Numbers 17:3
And thou shalt write Aaron's name upon the rod of Levi; for there shall be one rod for each head of their fathers houses.
Numbers 18:1
And Jehovah said unto Aaron, Thou and thy sons and thy fathers house with thee shall bear the iniquity of the sanctuary; and thou and thy sons with thee shall bear the iniquity of your priesthood.
1 Chronicles 23:13
The sons of Amram: Aaron and Moses; and Aaron was separated, that he should sanctify the most holy things, he and his sons, for ever, to burn incense before Jehovah, to minister unto him, and to bless in his name, for ever.
2 Chronicles 26:18
and they withstood Uzziah the king, and said unto him, It pertaineth not unto thee, Uzziah, to burn incense unto Jehovah, but to the priests the sons of Aaron, that are consecrated to burn incense: go out of the sanctuary; for thou hast trespassed; neither shall it be for thine honor from Jehovah God.
John 3:27
John answered and said, A man can receive nothing, except it have been given him from heaven.

American Standard Version Public Domain