Tradition
St. Ignatius of Antioch
Epistle to the Trallians
Chapter 13
Conclusion
The love of the Smyrnæans and Ephesians salutes you. Remember in your prayers the Church which is in Syria, from which also I am not worthy to receive my appellation, being the last of them. Fare well in Jesus Christ, while you continue subject to the bishop, as to the command [of God], and in like manner to the presbytery. And, every man, love one another with an undivided heart. Let my spirit be sanctified by yours, not only now, but also when I shall attain to God. For I am as yet exposed to danger. But the Father is faithful in Jesus Christ to fulfil both mine and your petitions: in whom may you be found unblameable.
Source: Epistle to the Trallians (New Advent)