Perhaps the most consequential series on 1John ever preached and one of the earliest examples of a complete expository series from the Swiss Reformation, these sermons mark Oecolampadius' arrival as the leading voice of the evangelical movement in Basel. As Ernst Staehelin noted, here in the 1John series the Reformer "for the first time organizes the reformatory message in a comprehensive manner." Preached over the course of twenty-one consecutive...