Ezra 2:62

These sought their writing of those being enrolled, and they found not: and they will be polluted from the priesthood.

Numbers 3:10

And Aaron and his sons thou shalt set up, and they shall watch their priesthood; and the stranger coming near shall die.

Leviticus 21:21-23

Any man to whom in him a blemish from the seed of Aaron the priest, shall not come near to bring the sacrifices of Jehovah: a blemish is in him, the bread of his God he shall not come near to bring.

Numbers 16:39-40

And Eleazar the priest will take the brazen censers, which they being burnt brought near; and they shall beat them out a covering for the altar,

Numbers 18:7

And thou and thy sons with thee shall watch your priesthood for all the word of the altar, and to within the vail; and ye served: the services a gift I will give your priesthood; and the stranger coming near shall die.

Ezekiel 44:10-14

But the Levites who went far off from me, in the going astray of Israel who went astray from me after the blocks; and they bare their iniquity.

Treasury of Scripture Knowledge

Summary

These sought their register among those that were reckoned by genealogy, but they were not found: therefore were they, as polluted, put from the priesthood.

Were they, as polluted, put from the priesthood

Bible References

Therefore

Leviticus 21:21
Any man to whom in him a blemish from the seed of Aaron the priest, shall not come near to bring the sacrifices of Jehovah: a blemish is in him, the bread of his God he shall not come near to bring.
Numbers 3:10
And Aaron and his sons thou shalt set up, and they shall watch their priesthood; and the stranger coming near shall die.
Numbers 16:40
A remembrance to the sons of Israel, so that a man, a stranger, shall not come near, he who is not from the seed of Aaron, to burn incense before Jehovah; and he shall not be as Korah and as his assembly: as Jehovah spake to him by the hand of Moses.
Numbers 18:7
And thou and thy sons with thee shall watch your priesthood for all the word of the altar, and to within the vail; and ye served: the services a gift I will give your priesthood; and the stranger coming near shall die.

Were they, as polluted, put from the priesthood

Ezekiel 44:10
But the Levites who went far off from me, in the going astray of Israel who went astray from me after the blocks; and they bare their iniquity.