Bobby Jamieson es un estudiante de doctorado en el Nuevo Testamento en la Universidad de Cambridge. Anteriormente se desempeñó como editor asistente en 9Marks y es el autor, más recientemente, de "Going Public: Why Baptism Is Required for Church Membership" (B&H, 2015). Jonathan Leeman (Ph.D., Universidad de Gales), un anciano en la Iglesia Bautista Capitol Hill en Washington, DC, es el director editorial en 9Marks y es el autor, más recientemente, de "Don't Fire Your Church Members: The Case for Congregationalism" (B&H, 2015).

Bobby Jamieson is a Ph.D. student in New Testament at the University of Cambridge. He previously served as assistant editor for 9Marks and is the author, most recently, of Going Public: Why Baptism Is Required for Church Membership (B&H, 2015). Jonathan Leeman (Ph.D., University of Wales), an elder at the Capitol Hill Baptist Church in Washington, DC, is the editorial director at 9Marks and is the author, most recently, of Don't Fire Your Church Members: The Case for Congregationalism (B&H, 2015)