What were the false teachers in Galatians 1:7 actually bringing?
They were not actually bringing another gospel. Their message was a perversion of the Gospel of Christ. It was a corruption, not a legitimate alternative. The Gospel of Christ must be understood where it is most explicitly laid out, 1 Corinthians 15:1-4, the clearest explanation of Paul's Gospel.
Les explains that in Galatians 1:7 the false teachers were not bringing another Gospel; what they brought was a perversion of the Gospel of Christ. Because the Gospel of Christ must be defined by its clearest presentation, Les points back to 1 Corinthians 15, calling it the clearest explanation of Paul's Gospel. He notes that Paul also refers to it as the Gospel of the Grace of God, the Gospel of God, My Gospel, and the Gospel according to the revelation of the mysteries, and this is the Gospel set out in 1 Corinthians 15:1-4.
Which is not another; but there be some that trouble you, and would pervert the gospel of Christ.
More Questions
How do false teachers turn the true gospel into another gospel?
Another gospel is produced when teachers use the same things Paul preached but add to it, take from it, or twist it, thereby moving people away from the pure gospel.