Theophilus of Antioch

Eusebius praises the pastoral fidelity of the primitive pastors, in their unwearied labours to protect their flocks from the heresies with which Satan contrived to endanger the souls of believers. By exhortations and admonitions, and then again by oral discussions and refutations, contending with the heretics themselves, they were prompt to ward off the devouring beasts from the fold of Christ. Such is the praise due to Theophilus, in his opinion; and he cites especially his lost work again...