Keller believes ministry requires three elements: affinity, ability and opportunity. “Affinity is having a burden in my life—‘I really want to do ministry.’ The ability is somebody saying, ‘We think you have the gifts. We ordain you.’ You may have the desire for ministry, but you cannot be self-accredited. The community must recognize your gifts. Finally, opportunity means God in his providence opens the door and somebody actually says, ‘Would you come do it?’ ” Keller believes the call to ministry