Numbers 6:7

He is not to defile himself for his father or mother, or his brother or sister, when they die, because the hair consecrated to his God is on his head.

Numbers 9:6

But there were some men who were unclean because of a human corpse, so they could not observe the Passover on that day. These men came before Moses and Aaron the same day

Leviticus 21:1-2

The Lord said to Moses: “Speak to Aaron’s sons, the priests, and tell them: A priest is not to make himself ceremonially unclean for a dead person among his relatives,

Leviticus 21:10-12

“The priest who is highest among his brothers, who has had the anointing oil poured on his head and has been ordained to wear the garments, must not dishevel his hair or tear his garments.

Ezekiel 44:25

A priest may not come near a dead person so that he becomes defiled. However, he may defile himself for a father, a mother, a son, a daughter, a brother, or an unmarried sister.

Treasury of Scripture Knowledge

Summary

Numbers 6:7

He shall not make himself unclean for his father, or for his mother, for his brother, or for his sister, when they die: because the consecration of his God is upon his head.

Unclean

Numbers 9:6

Leviticus 21:1

Ezekiel 44:25

General references

Leviticus 22:2

Bible References

Unclean

But there were some men who were unclean because of a human corpse, so they could not observe the Passover on that day. These men came before Moses and Aaron the same day

The Lord said to Moses: “Speak to Aaron’s sons, the priests, and tell them: A priest is not to make himself ceremonially unclean for a dead person among his relatives,

A priest may not come near a dead person so that he becomes defiled. However, he may defile himself for a father, a mother, a son, a daughter, a brother, or an unmarried sister.

General references

“Tell Aaron and his sons to deal respectfully with the holy offerings of the Israelites that they have consecrated to Me, so they do not profane My holy name; I am Yahweh.