Jonathan Leeman (Ph.D., Wales) is an elder at Capitol Hill Baptist Church in Washington, DC and the editorial director for 9Marks. He edits the 9Marks series of books as well as the 9Marks Journal. He is also the author of several books on the church, including The Church and the Surprising Offense of God's Love. Jonathan lives with his wife and four daughters in suburban Washington. Mark Dever is senior pastor of Capitol Hill Baptist Church in Washington, DC and president of 9Marks. He holds degrees from Duke University (B.A.), Gordon-Conwell Theological Seminary (M.Div.), The Southern Baptist Theological Seminary (M.Theol.), and Cambridge University (PH.D.).