Mike Horton’s TGC21 message, “The Necessity of Justification,” takes a look at Luther’s discovery of the doctrine of justification and the many factors that have affected its understanding, acceptance, or rejection by believers over the years. Correctly understanding and applying the doctrine of justification, Horton argues, is key to another needed reformation, though it does not stand alone. We must recognize the priority of justification while also identifying and rejoicing in the plethora of other gifts we receive in salvation.