Galatians 2:7

But contrariwise, when they saw that I had been intrusted with the gospel of the uncircumcision, even as Peter with the gospel of the circumcision (for he that wrought for Peter unto the apostleship of the circumcision wrought for me also unto the Gentiles).

Gospel of the circumcision.., of the uncircumcision ... Huxtable was correct in the observation that:

This does not indicate any diversity in the doctrine communicated to the uncircumcision from that communicated to the Jews, but simply a diversity in the sphere of its proclamation.[19]

The marvelous tenderness and forbearance of the heavenly Father are fully in view in all of these remarkable events. The failure of the apostleship in Jerusalem to get on with preaching the gospel "to the whole creation" as Christ had commanded them to do (Mark 16:15,16) was the most deplorable sin they ever committed. For God to have permitted the Judaizing of Christianity would have been, in its final result, the restriction of salvation to Jews alone; and the entire premise of God's loving all people and desiring their salvation would have been countermanded and nullified. That was the acute and fatal nature of the problem. The intervention of God himself at such a juncture was the only way to correct it. This accounts for the conversion of Saul of Tarsus who had the power to cut the umbilical cord that strapped the infant church to Judaism, threatening to strangle Christianity to death.

The weakness of the Twelve, springing from their environment, and their failure (at first) to understand the world-wide, independent nature of Christianity, was contained by Almighty God in those events clustered around the name of Paul; and with infinite mercy and tenderness, the Father did not remove or punish the Twelve, but on the other hand, committed the preaching to the Gentiles to one more able than themselves to do it. Later on, of course, the Twelve took up and discharged fully their total responsibility. Would they ever have been able to do so without Paul? It seems unlikely; therefore the miracle of Paul!