Are Christadelphians more similar to Islam then to Christianity? They believe in one God and reject the Triune godhead. WHOSOEVER TRANSGRESSES AND DOES NOT ABIDE IN THE DOCTRINE OF CHRIST DOES NOT HAVE GOD- 2nd John 9. I would suggest that Christadelphians don’t really know God at all. Perhaps they mistake Him for Allah? That could explain how they.”kill” the doctrine of Christ. Maybe before it is too late the Holy Spirit can guide them into all truth?