John MacArthur is an American pastor, author, and teacher known for his conservative Christian beliefs. He has served as the pastor of Grace Community Church in Sun Valley, California, since 1969. MacArthur is also the president of The Master's University and The Master's Seminary, institutions that emphasize biblical education. He is widely recognized for his expository preaching style, which focuses on explaining the Bible verse by verse. MacArthur has written numerous books and study guides, contributing to his reputation as a prominent figure in evangelical Christianity. His teachings often emphasize the authority of Scripture and the importance of sound doctrine.