The sermon was supposedly titled “‘None Other Gods’: Culture in War Time,” although no extant copy has that full title. His text was an obscure verse from the Book of Deuteronomy. It was the first sermon he had ever preached. Before the end of the war, the preacher, Clive Staples Lewis, a native of Belfast, a veteran of the Great War, and a rather recently converted agnostic, had become a household word in Great Britain and beyond as a defender of the Christian faith.
"An Unlikely Preacher: C.S. Lewis and the War-Time Sermon,"
Sehnsucht: The C. S. Lewis Journal: Vol. 15
, Article 3.
Available at: https://digitalcommons.georgefox.edu/cslewisjournal/vol15/iss1/3