PROS KORINQIOUS A, chapter 8 17:

Οὐκ εἰμὶ ἐλεύθεροσ; οὐκ εἰμὶ ἀπόστολοσ; οὐχὶ Ιἠσοῦν τὸν κύριον ἡμῶν ἑόρακα; οὐ τὸ ἔργον μου ὑμεῖσ ἐστὲ ἐν κυρίῳ;