In Leviticus 21:6, priests are called to be holy because they offer the Lord's offerings, which is the rationale for the blemish restrictions here.

In Leviticus 21:8, the priest is declared holy to his God, reinforcing the requirement that only unblemished priests may serve.

Leviticus 21:17 states the same blemish restriction for priests, that no one with a blemish may offer bread to God.

In Leviticus 10:3, God demands holiness from those who approach Him, which is the foundational principle for the priestly blemish laws.

Leviticus 22:25 prohibits blemished animals as offerings, a parallel restriction to the blemished priest rule here.

In Leviticus 3:11, the offering by fire is described as food for the Lord, which is what the blemished priest is prohibited from offering.

Leviticus 6:18 restricts eating the grain offering to holy priests, consistent with the exclusion of blemished priests from sacred duties.

In Ezra 2:62, priests without genealogy are disqualified, paralleling the disqualification of blemished priests here.