This is a guest post from Daniel G. Wainwright, a senior lecturer in theology at the University of Oxford.
He blogs at www.gospel-is-all.com.
He can be reached at djwainwright(at)oxford.ac.uk or by email at djwilliams(at.gmail.com).
Follow him on Twitter: @daniel_william_1.
This article first appeared on Gospel Is All, an initiative of the Christian Post (www.christianpost.org.uk).
For more articles, and to get occasional news delivered directly to your inbox, subscribe to the Christian post podcast at www-gospel.com/podcasts.
This article is adapted from Gospel is All: The Future of Christianity, by Daniel Wainwoehr.