To our beloved and much-desired fellow-ministers Eusebius, Lucifer, Asterius, Kymatius, and Anatolius, Athanasius and the bishops present in Alexandria from Italy and Arabia, Egypt and Libya; Eusebius, Asterius, Gaius, Agathus, Ammonius, Agathodæmon, Dracontius, Adelphius, Hermæon, Marcus, Theodorus, Andreas, Paphnutius, another Marcus, Zoilus, Menas, George, Lucius, Macarius and the rest, all greeting in Christ.
We are persuaded that being ministers of God and good stewards you are sufficient to order the affairs of the Church in every respect. But since it has come to us, that many who were formerly separated from us by jealousy now wish for peace, while many also having severed their connection with the Arian madmen are desiring our communion, we think it well to write to your courtesy what ourselves and the beloved Eusebius and Asterius have drawn up: yourselves being our beloved and truly most-desired fellow-ministers. We rejoice at the said tidings, and pray that even if any be left still far from us, and if any appear to be in agreement with the Arians, he may promptly leave their madness, so that for the future all men everywhere may say, 'One Lord, one faith.' For as the psalmist says, what is so good or pleasant as for brethren to dwell in unity. But our dwelling is the Church, and our mind ought to be the same. For thus we believe that the Lord also will dwell with us, who says, 'I will dwell with them and walk in them ' and 'Here will I dwell for I have a delight therein. ' But by 'here' what is meant but there where one faith and religion is preached?
Source: Tomus ad Antiochenos (New Advent)