John MacArthur is founder and featured teacher of Grace to You. A fifth-generation pastor; John is also the pastor-teacher of Grace Community Church in Sun Valley, California, and president of The Master's University and Seminary. You can hear him daily on ''Grace to You," a worldwide, half-hour radio program dedicated to Jesus Christ and the teaching of the Bible.

Phil Johnson is the executive director of Grace to You and teaches regularly as a lay pastor at Grace Community Church. He has been closely associated with John MacArthur since 1981 and edits most of MacArthur's major books. Phil is probably best known for his websites, which include The Spurgeon Archive (www.spurgeon.org) and the Pyromaniacsblog (teampyro.blogspot.com).

Don Green is an ordained elder at Grace Community Church and pastors GraceLife, a group of more than six hundred adults. He has published several articles on biblical themes. He is also the managing director of Grace to You, where he oversees the daily operations of John MacArthur's international media ministry.

Colonel (retired) Jeffrey N. Williams, an astronaut since 1996, has flown three space flights, including one mission aboard the space shuttle Atlantis and two expeditions to the International Space Station. He and his wife have two married sons and two grandchildren and reside in Texas, where Jeff serves as a lay leader and Bible teacher in his home church. He and his wife have listened to "Grace to You" for more than twenty years and have been Grace Partners for more than a decade.