Even if I am not an apostle to others, surely I am to you. For you are the seal of my apostleship in the Lord.
Textus Receptus (TR) - 1 Corinthians 9:2 >Εἰ ἄλλοις οὐκ εἰμὶ ἀπόστολος, ἀλλά γε ὑμῖν εἰμι· ἡ γὰρ σφραγὶς τῆς ἐμῆς ἀποστολῆς ὑμεῖς ἐστε ἐν Κυρίῳ.