Exodus 28:30 describes the Urim and Thummim placed in the priest's breastplate, the very item mentioned in Nehemiah 7:65 as needed for priestly authorization.

Leviticus 2:3 states the grain offering is most holy and belongs to priests only, explaining why non-priests are prohibited from eating such offerings in Nehemiah 7:65.

Leviticus 2:10 similarly declares the grain offering most holy for Aaron's sons, reinforcing the restriction on non-priests eating most holy things.

Leviticus 6:17 specifies that only males of Aaron's family may eat the most holy offerings, directly supporting the prohibition in Nehemiah.

Leviticus 10:17 commands priests to eat the sin offering in the holy place because it is most holy, reinforcing that only priests may consume such offerings.

Numbers 27:21 shows the Urim used for divine guidance, explaining why a priest with Urim and Thummim was required before allowing the people to eat most holy things.

Deuteronomy 33:8 mentions Urim and Thummim given to Levi, the priestly tribe, which is exactly what Nehemiah 7:65 awaits — a priest with that oracle.

Ezra 2:63 repeats the exact ruling about abstaining from holy food until a priest with Urim and Thummim comes — a direct parallel account.