Is a Visiting Scholar for the MA in Christian Apologetics program at Talbot Seminary and the chairman of the board of Ratio Christi, a university apologetics ministry. Previously, he was the executive director of Simon Greenleaf University (now Trinity Law School) and served on the pastoral staff of two large churches. He holds a Doctor of Ministry from Trinity Evangelical Divinity School. 

Clay is the author of the books, Why Does God Allow Evil? Compelling Answers to Life’s Toughest Questions (Harvest House, 2017); and Immortal: How the Fear of Death Drives Us and What We Can Do About It (Harvest House, 2020). He also authored the apologetics software, Prepared Defense and various encyclopedia and journal articles. 

He formerly hosted Contend for Truth, a call-in nationally syndicated talk radio program. On his program he debated many people over eight years, including panentheist John Cobb, Jr.; a professor of Buddhism; Jamal Badawi, Islamic Information Institute; a Muslim cleric; a Church of Scientology minister; Mormons; Jehovah’s Witness Greg Stafford; Dallas Blanchard, Religious Coalition for Reproductive Rights; Peta representatives; a euthanasia advocate; a secular humanist, Rep. Loretta Sanchez; KFI talk show host Bill Handle; Jimmy Creech, SoulForce chairman of the board; Bruce Ware; R. C. Sproul, Jr.; Robert Morey; R. Scott Clark; and a KJV only advocate. 

Clay focuses his writing and teaching on explaining what the Lord is accomplishing through allowing evil, suffering, and death. He lives with his wife Jean E. in south Orange County California.