Would Peter have gone to the Gentile Cornelius without God's intervention?
No. Without God's direct pressure and proof that this was where he was supposed to go, Peter would never have gone to Cornelius. He would have been more obstinate than Jonah, since Jews believed they were to have nothing to do with Gentiles.
Les teaches that Peter would not have gone to the Gentile Cornelius without God's intervention. The context explains that Israel's calling was tied to the Abrahamic covenant: Israel was to be a nation established in its land, with God Himself as King, and that was only for a Jew. Only afterward could Israel evangelize the nations. So the Jews' mentality that they were to have nothing to do with Gentiles was correct for that time. At Acts chapter 10, God had to put pressure and proof on Peter that this was where He was supposed to go; otherwise Peter would never have gone and would have been more obstinate than Jonah, who questioned going to Gentiles who were enemies. God had something else in mind, and He told Peter to go with these men. Peter then went to Caesarea with six believing Jews, making seven, God's perfect number. Cornelius waited with kinsmen and near friends and worshiped Peter, showing he was pagan.