After the Jerusalem Council, it was clear that all people with faith would be saved and that this does not only include Jews, but also the Gentiles. Believers were "free from the law," meaning that they did not have to live under the law. However, we can see Paul blaming the Galatians about their fickleness of obeying the false messages in Galatians 1:6-9. Paul tells us that those messages from the false prophets are denying Christ's message. He even says that even an angel from the sky must be cursed if they preach the wrong message, which said that one must obey the whole law in order to be saved. Like this, in Galatians, we can see the people of Galatia enslaving themselves to the law again. Similar to this, these days, so many people think that keeping the law is more important than spending time to grow their faith. However, even they try to be the perfect law-keepers, they sin and get discouraged by their sin. As a result, they deny Christianity because they think that Christianity doesn't make sense, because they tried their best to be a good believer. Also, many Non-Christians do not believe in God because they have a stereotype that all Christians act like they have faith but their actions all focus more on obeying the law. I think that we as Christians must know the Bible in detail so that we won't be confused by any others but tell the truth like Paul tells us here. .
Since the problem with circumcision was resolved in Jerusalem council, the only "false message" Judaizers could rely on was 'keeping the law in order to be saved'. This was truly powerful enough to shake people's belief, because they knew that their ancestors all obeyed the law and it was the most important thing to them. Because of this, many of the Galatians started to obey the law instead of working hard to improve their faith. Until now, many people are so easily persuaded and follow heresy.
