And John answered him, saying, Teacher, we saw one casting out demons in your name, and he followed not us: and we forbade him, because he followed not us.
All Commentaries on Mark 9:38 Go To Mark 9
Augustine of Hippo
AD 430
There may be something catholic outside the Church catholic. The name of Christ could exist outside the congregation of Christ, as in the case of the man casting out devils in Christ’s name. There may by contrast exist pretenses within the church catholic, as is unquestionably the case of those “who renounce the world in words and not in deeds,” and yet the pretense is not catholic. So as there may be found in the church catholic something which is not catholic, so there may be found something which is catholic outside the church catholic. On Baptism, Against the Donatists ().