Nehemiah 7:64-66

64 These people searched for their [family] names in the genealogical records, but their names couldn't be found there. For this reason they were considered contaminated and couldn't be priests.

65 The governor told them not to eat any of the most holy food until a priest could use the Urim and Thummim [to settle the problem].

66 The whole assembly totaled 42,360.