Parallel
Leviticus 21:6
Brenton's English Septuagint · Berean Standard Bible
They shall be holy to their God, and they shall not profane the name of their God; for they offer the sacrifices of the Lord as the gifts of their God, and they shall be holy.
They must be holy to their God and not profane the name of their God. Because they present to the LORD the food offerings, the food of their God, they must be holy.