Bizarre renderings of the book of Acts, which goes hand in hand with the refusal of Hebrews, have been represented on this site at various times.
Salvation through Christ, or 'the Gospel', is central to the book of Acts. The Greek verb for “preach the gospel” (euangelizo) occurs more in this book than in any other in the New Testament.
We know that Paul was sent to the Gentiles, but he also preached to the Jews. In fact, when he went somewhere to spread the gospel, he would first enter the synagogue and preach to the Jews. At Iconium they entered together into the Jewish synagogue and spoke in such a way that a great number of both Jews and Greeks believed Acts 14:1 There were converts from the Gentiles to Judaism, so Paul's preaching converted both Jews and Gentiles, IN the synagogue.
Paul did not preach a different gospel and he summed it up this way:
I am not ashamed of the gospel of Christ, for it is the power of God for salvation to everyone who believes —to the Jew first and also to the Greek. Romans 1:16