Schlatter: Doctrine + Ethics

Just read this statement for the first time at the very end of Schlatter's Theology of the Apostles:

The doctrinal formation of the apostolic period remains a closed book if the ethical energy of the message of repentance, and the circumspectness of its didactic labor as it wrestled to arrive at sure knowledge, are considered to be in conflict or to be unconnected processes. The vigor with which evil was repudiated and the vigor with which the divine word was appropriated were mutually productive. (389)