εἰ μὴ ἦλθον καὶ ἐλάλησα αὐτοῖς, ἁμαρτίαν οὐκ εἶχον → if I had not come and spoken to them, they would not be guilty of sin
ἀπεκεῖ: ἐπίρρ. ὡς καὶ νῦν, «ὅτι ἀπεκεῖ κατέβαινε τὸ ἅγιον φῶς» Ἀνωνύμ. π. Ἱεροσολ. σ. 81. 4.