It's far more likely that Peter was jealous of Paul, although I think it's a stretch to try to create that kind of animosity between the Apostles.
Gospel I believe means Good News. Good news of the saving grace of Jesus Christ. Paul certainly preached the Gospel message. [Pinging Salvation because she was apparently gobsmacked that Paul could be preaching the "gospel." I think that was because Peter MUST be seen as the top ranking person back in the 1st century because Catholicism made him the ex post facto pope 300 or so years later. There fore Paul must be marginalized]
Jesus is the only name in which we can be saved.
Amen to that, but some popes declare that Mary can save.
It’s far more likely that Peter was jealous of Paul, although I think it’s a stretch to try to create that kind of animosity between the Apostles.
Or is it that he did exactly what Jesus said to do which is turn the other cheek?
What was the instructions Jesus gave concerning this matter?
Matthew 18:15
Moreouer, if thy brother shall trespasse against thee, goe and tell him his fault betweene thee and him alone: if he shall heare thee, thou hast gained thy brother.
Paul did not follow Jesus in this matter, what he did was to tell the whole world about Peters fault, imaginary or real.
What it does show is that if true Peter was not perfect and true or not neither was Paul, they were men just like us and they obviously said and wrote things with out guidance from the Holy spirit.
The job of the apostles was to build Churches of people and preach the word of Jesus which is the gospel and this they did.
Much in the letters wrote by Paul was not about the Gospel but about how to oversee a Church and how a Church should be governed in order for Jesus to be honored, for instance 1Cor ch 11.
I doubt they did that, but the Virgin of Israel will always point you to the Holy One of Israel who can save you.