A priest with a physical blemish must not serve

"Speak to Aaron, saying, 'No man of your offspring throughout their generations who has a defect shall approach to offer the food of his God.

Hebrew

יז דַּבֵּר אֶל-אַהֲרֹן, לֵאמֹר: אִישׁ מִזַּרְעֲךָ לְדֹרֹתָם, אֲשֶׁר יִהְיֶה בוֹ מוּם--לֹא יִקְרַב, לְהַקְרִיב לֶחֶם אֱלֹהָיו.

Greek

17 Εἰπὸν Ααρων Ἄνθρωπος ἐκ τοῦ γένους σου εἰς τὰς γενεὰς ὑμῶν, τίνι ἐὰν ᾖ ἐν αὐτῷ μῶμος, οὐ προσελεύσεται προσφέρειν τὰ δῶρα τοῦ θεοῦ αὐτοῦ.

• Parashah: Emor
• Sefer HaChinuch: 275
• Mishneh Torah: Service — Entry into the Temple

• Leviticus 21:17

Enumeration and classification from BibleData. The Greek is the Septuagint reading of the same verse, carried by the source for comparison.