Acts 7:8

8AndκαὶHe gaveἔδωκενto himαὐτῷ[the] covenantδιαθήκηνof circumcisionπεριτομῆς·andκαὶthusοὕτωςhe begatἐγέννησεντὸνIsaacἸσαὰκandκαὶcircumcisedπεριέτεμενhimαὐτὸνon theτῇdayἡμέρᾳτῇeighthὀγδόῃ,andκαὶIsaacἸσαὰκτὸνJacobἸακώβ,andκαὶJacobἸακὼβtheτοὺςtwelveδώδεκαpatriarchsπατριάρχας.

And He gave to him the covenant of circumcision; and thus he begat Isaac and circumcised him on the eighth day, and Isaac Jacob, and Jacob the twelve patriarchs.