As I read the book “If Grace Is True,” a well-known old bromide kept coming to mind: “The road to hell is paved with good intentions.” This book may be the ultimate and most ironic example of the truth of that saying. This book is based on a simple premise: if grace (God’s unmerited favor) is true, then literally everyone will go to heaven, no matter their religion or behavior. Those who are familiar with orthodox Christian doctrine will immediately realize there is a problem with this premise: there is nothing in all of Christianity that supports it. As a...