King James Bible
"(For he that wrought effectually in Peter to the apostleship of the circumcision, the same was mighty in me toward the Gentiles:)"
Paul identifies God as the one who empowered Peter's ministry specifically to the Jews (the circumcised). This parenthetical statement validates Peter's apostolic authority while acknowledging the distinct focus of his mission to the Jewish people. Paul asserts that the identical divine power that worked through Peter also operated through him, but directed toward non-Jewish peoples. This parallel structure emphasizes that both apostolic missions originated from the same God, legitimizing Paul's controversial ministry to the Gentiles as equally valid.