Have you ever worked hard on some type of job only to have someone undo your work in a short time? Even though the Jerusalem church had okayed Gentiles becoming believers without having to become Jews first, hardliner Jewish believers continue to claim the opposite. This group is so zealous that when they hear the report of Paul’s mission trip, they go visit these same towns. There they begin to preach against Paul. This message confused the new believers. Many began to follow them and to forget what Paul had preached. Some weren’t sure what to do and wrote a letter to Paul. When Paul received the letter, he was very upset and immediately wrote a letter in return