In response to false teachers that have infiltrated the churches in Galatia, Paul rejects any teaching, any gospel that is not the true gospel. The true gospel is based on the facts that we are too sinful to contribute to our salvation, we need a complete rescue, and we are saved by trusting in the work of Jesus, the grace of Jesus plus nothing else. We can do nothing to rescue ourselves; Jesus has done it all. That’s the big message of Galatians we’ve bumped into week after week. We are saved not by being good or by doing good, salvation by human effort and merit, but we are saved by the good Jesus has done.