We continue our study showing how Paul fought for the true Gospel at the Jerusalem Council, taking an in-depth look at the Jerusalem Council in Acts 15, and harmonising it with Galatians 2. We also review other challenges to the Gospel of Grace that took place later in Church history, such as the Pelagian heresy and modern liberalism. Finally, we note how Paul was no respecter of persons. Although he honoured the original apostles as true apostles of Christ, he insisted that as men, they were capable of being wrong, and so were not above judgment and accountability.