As we enter the season of Trinity, Pastors Nathanael Mayhew and Rob Sauers review the book “Mere Christianity” by C.S.Lewis. They will discuss Lewis’ life and journey from Atheism to Christianity and the radio shows he did which became the book under discussion. Lewis discusses the problems of many of the religions of the world in dealing with the the problem of evil, and who Jesus is. He discusses the person of Jesus as true God, the Christian life, and the Trinity. While there are many excellent observations in the book, Lewis also falls short and even into error in many areas. He does not get into justification by Grace, or even the work of Christ as our Savior. He also confuses Law and Gospel and falls into Arminianism in connection with our sanctification. We pray that this review will be helpful to those who have read or interested in reading Lewis’ book.