“And he gaue him the couenant of Circumcision: and so Abraham begate Isaac, and circumcised him the eight day: and Isaac begate Iacob, and Iacob begate the twelue Patriarchs.”
1611 King James Version (KJV)
7:8 And so he begat Isaac - After the covenant was given, of which circumcision was the seal. #Gen 17:10|.
Ac 7:8 And he gave him the covenant of circumcision. After his call and the promise of Christ. See Ge 17:1-14. The covenant of Christ was for all; circumcision for the Jews.