John Fullerton MacArthur Jr. is an American pastor and author known for his internationally syndicated Christian teaching radio program Grace to You. He has been the pastor-teacher of Grace Community Church in Sun Valley, California, since February 9, 1969. He is also the chancellor emeritus of The Master's University in Santa Clarita, California, and The Master's Seminary in Los Angeles, California. 

MacArthur is a Reformed Baptist and a strong proponent of expository preaching. He has been acknowledged by Christianity Today as one of the most influential preachers of his time, and was a frequent guest on Larry King Live as a representative of an evangelical Christian perspective.

MacArthur has written or edited more than 150 books. (+info)

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