Flavian presided at a council of forty bishops at Constantinople on November 8, 448, to resolve a dispute between the metropolitan bishop of Sardis and two bishops of his province. Eusebius, bishop of Dorylaeum, presented an indictment against Eutyches. The speech of Flavian remains, concluding with this appeal to the bishop of Dorylaeum: "Let your reverence condescend to visit him and argue with him about the true faith, and if he shall be found in very truth to err, then he shall be called to our holy assembly, and shall answer for himself."