Ezra 2:62
These sought their record in the genealogy [records], but they were not found, and {were excluded from the priesthood as unclean}.
Numbers 3:10
But you will count Aaron and his descendants; they will keep their priesthood, and the stranger who approaches will be put to death."
Leviticus 21:21-23
Any man from Aaron the priest's offspring in whom is a physical defect shall not come near to present offerings made by fire to Yahweh; a physical defect [is] in him; he shall not come near to present his God's food.
Numbers 16:39-40
Eleazar the priest took the bronze censers that the ones who were burned presented, and they hammered them out thinly [as] plating for the altar;
Numbers 18:7
But you with your sons will keep your priesthood to perform your priestly duties for everything at the altar and for {the area behind the curtain}. I give you the priesthood as a gift, but the stranger who approaches will be put to death."
Ezekiel 44:10-14
{But} the Levites who removed themselves from me {at the going astray of Israel}, who went astray from me [and went] after their idols, as a result they will bear their guilt.