What don't Christians believe? Is Jesus really divine? Is Jesus really human? Can God suffer? Can people be saved by their own efforts?The early church puzzled over these questions, ruling in some beliefs and ruling out others. Heresies and How to Avoid Them explains the principal ancient heresies and shows why contemporary Christians still need to know about them. These famous detours in Christian believing seemed plausible and attractive to many people in the past, and most can still be found in modern-day guises. By learning what it is that Christians don't believe--and why--believers today can gain a deeper, truer understanding of their faith.