 Already in this early work, Ebeling's interest in systematic as well as historical questions was very apparent.At the end of the Second World War, he completed in 1947 his habilitation at the University of Tübingen, Germany and assumed the chair for ecclesiastical history in Tübingen.In 1954 Ebeling changed his focus of study from ecclesiastical history to systematic theology and became Professor of Systematic Theology in Tübingen.