We come to Acts 15 and find a group of believers who felt that grace wasn’t enough to save someone. They said that you must be circumcised in order to be saved.
This was a great concern to Paul and Barnabus, as well as the other disciples. After praying about the matter, the apostles decided that grace was enough; the brothers from Judea were wrong in requiring Gentiles to become Jews to be considered Christians.
What do you consider is required to be a “good Christian”? Church attendance? Baptism? Adherence to a code of conduct (prohibition of dancing, drinking, etc.)? Being a member of a particular denomination (or non-denomination)? Holding a particular theological position? Aligning with the teachings of specific group of teachers, preachers, writers, or denominational leaders? Aversion to the teachings of specific group of teachers, preachers, writers, or denominational leaders?
Application: Be careful. Be very careful as you view other believers through your personal preferences. Be careful what labels (“liberal”, “fundamentalist”, and especially “false prophet” and “heretic”) you apply to someone with whom you disagree. “Let your conversation be always full of grace, seasoned with salt, so that you may know how to answer everyone. Col 4:6 (NIV)