Mark 1:7

7Andκαὶhe was preachingἐκήρυσσενsayingλέγων·He comesἜρχεταιwhoὁ[is] mightierἰσχυρότερόςthan Iμουafterὀπίσωmeμου,of whomοὗnotοὐκI amεἰμὶsufficientἱκανὸςhaving stooped downκύψαςto untieλῦσαιtheτὸνstrapἱμάνταof theτῶνsandalsὑποδημάτωνof Himαὐτοῦ·

And he was proclaiming, saying, “The One mighter than I comes after me, of whom I am not sufficient, having stooped down, to loose the strap of His sandals.