Philippians 1:1

With the bishops and deacons. [1] By bishops many understand those who were only priests; for the name of priests, at that time, was common to those who were by their ordination priests or bishops, though the order as well as the functions were different. St. John Chrysostom also takes notice, that the name of deacon then signified any minister of Christ. St. Paul also might mean the bishops, or priests and deacons, not only of Philippi, but also of the adjacent places. (Witham)

[BIBLIOGRAPHY]

Cum episcopis et diaconis, Greek: sun episkopois kai diakonois. St. Jerome, St. John Chrysostom, &c. take notice, that though the office of bishop and priest was different, yet both these different orders were sometimes expressed by the word bishop, Greek: episkopos; sometimes by the word priest, Greek: presbuteros. St. Jerome, tom. 4. in Titum. p. 413.: Quia eosdem episcopos illo tempore, quos et presbyteros appellabant, propterea indifferenter de episcopis quasi de presbyteris est locutus. See again, tom. 4, part 2, Epist. ad Oceanum, p. 648. and Ep. ad Evangelium, p. 802. St. John Chrysostom on this place: Tunc nomina erant communia; atque etiam ipse episcopus vocabatur diaconus. (tom. 4. Greek: log. a. p. 5. Ed. Savil.) Tous presbuterous outos ekal[]. Tote gar ekoinonoun tois onomasi, kai diakonos o episkopos elegeto.