What does Galatians 2:7 mean?
The true leaders of the Christian movement, the church, agreed with Paul completely. All of the apostles, those who walked with Jesus during his time on earth and Paul, who was added after the resurrection, stood together in unity. They all preached the gospel of salvation by God's grace alone and not by human works or following the Law. They were unanimous in their view that no act, ritual, tradition, or other kind of "work" was required in order for a person to be saved.These other apostles gave their approval to Paul's message and accepted that Christ had commissioned Paul specifically to take the gospel to non-Jewish people around the world. Peter, in a similar way, had been sent by Jesus to preach the gospel to "the circumcised," the Jewish people who had previously followed the law of Moses.
The important point was that though Paul and Peter preached to different groups of people, they preached exactly the same message: All must come to salvation by God's grace through faith in Christ.