1 Corinthians 9:2

Εἰ ἄλλοις οὐκ εἰμὶ ἀπόστολος, ἀλλά γε ὑμῖν εἰμι· ἡ γὰρ σφραγὶς τῆς ἐμῆς ἀποστολῆς ὑμεῖς ἐστε ἐν Κυρίῳ.

Ei allois oyk eimi apostolos, alla ge ymin eimi· ē gar sphragis tēs emēs apostolēs ymeis este en Kyriō.

King James Version (KJV)

If I be not an apostle unto others, yet doubtless I am to you: for the seal of mine apostleship are ye in the Lord.

Modern English

Even though I may not be an apostle to others, surely I am to you! For you are the seal of my apostleship in the Lord.