Flannery O'connor said this quote

I don’t really think the standard of judgment, the missing link, you spoke of that you find in my stories emerges from any religion but Christianity, because it concerns specifically Christ and the Incarnation, the fact that there has been a unique intervention in history. It’s not a matter in these stories of Do Unto Others. That can be found in any ethical cultural series. It is the fact of the Word made flesh.