Apologetics, Bellator Christi Podcast, Christian apologetics, Theological, Theology BCP: Sunday’s Message: “Mere Christianity: Fundamentals of God’s Existence” (Deuteronomy 6:4 by / Brian Chilton | January 22, 2017. The great C. S. Lewis wrote, what many consider to be his magnum opus, Mere Christianity. “Mere Christianity” refers to the… Share this:EmailWhatsAppShare on TumblrPrintTelegramMorePocketRedditLike this:Like Loading...