Ravi Kumar Zacharias (born 26 March 1946) is an Indian-born Canadian-American Christian apologist. A defender of traditional evangelicalism, Zacharias is the author of numerous Christian books, including the Gold Medallion Book Award winner Can Man Live Without God? in the category "theology and doctrine" and bestsellers Light in the Shadow of Jihad and The Grand Weaver. He is the founder and chairman of the board of Ravi Zacharias International Ministries.
Charles Haddon (CH) Spurgeon (19 June 1834 – 31 January 1892) was a British Particular Baptist preacher. Spurgeon remains highly influential among Christians of various denominations, among whom he is known as the "Prince of Preachers". He was a strong figure in the Reformed Baptist tradition. Spurgeon produced powerful sermons of penetrating thought and precise exposition. Many Christians have discovered Spurgeon's messages to be among the best in Christian literature.