Rick Warren, the founder and senior pastor of Saddleback Church in Lake Forest, California, leads a congregation of 20,000 members each Sunday, making it the eighth largest in America. He is the author of best-selling books, including The Purpose Driven Life and The Purpose Driven Church. Warren has been compared to Billy Graham for his interactions with presidents and high governmental officials, often using these engagements to promote his program of good works, which focuses on aiding poorer nations with essentials like water supplies and septic facilities. Despite his influence and ability to motivate followers, some criticize his philosophy for prioritizing the growth of a large church over sound biblical teaching. Additionally, Warren has aligned with the King's Way movement, aiming to unite Christians and Muslims without proselytizing, and has proposed principles to bring the groups closer, including the idea that they worship the same God, a stance that raises questions about his beliefs as a Christian minister.