Basil of Caesarea

Those whom the usual penalties do not recall to their senses, and even exclusion from prayers does not lead to repentance, must be subjected to the canons given by the Lord. For it has been written, "If your brother sins, go and show him his fault, between you and him. But if he does not listen to you, take one or two others along with you. If he refuses to listen to them, tell it to the church. And if he refuses to listen even to the church, let him be to you as a Gentile and a tax collector." Now, this truly has been done in the case of this man. Once he was accused; in the presence of one or two he was convicted; a third time, in the presence of the church. Since, therefore, we have solemnly protested to him and he has not acquiesced, let him for the future be excommunicated. And let it be announced to all the village that he is not to be admitted to any participation in the ordinary relations of life, so that, by our refusal to associate with him, he may become wholly the food for the devil.