Ezra 2:62

62 Since they were unable to prove who their ancestors were, they were not accepted as priests.

Ezra 2:62 Meaning and Commentary

Ezra 2:62

These sought their register among those that were reckoned by
genealogy
To find their names written and registered there; for the Jews kept public registers of their priests, their descent, marriages, and offspring, that it might be known who were fit, and who not, to officiate as such:

but they were not found;
their names were not there, nor any account taken of them:

therefore were they, as polluted, put from the priesthood;
were not suffered to attend at the altar, and offer sacrifice, and enjoy the privileges belonging to that office.

Ezra 2:62 In-Context

60 but they could not prove that they were descendants of Israelites.

61 The following priestly clans could find no record to prove their ancestry: Habaiah, Hakkoz, and Barzillai. (The ancestor of the priestly clan of Barzillai had married a woman from the clan of Barzillai of Gilead and had taken the name of his father-in-law's clan.)

62 Since they were unable to prove who their ancestors were, they were not accepted as priests.

63 The Jewish governor told them that they could not eat the food offered to God until there was a priest who could use the Urim and Thummim.

64 Total number of exiles who returned - 42,360