Paul reminds the Philippians that they can obey in his absence and not in his presence only, working out their own salvation, as no apostle can work it out on their behalf.
"The Expositor's Bible: The Book of Exodus"
G. A. Chadwick
Dr. Mosheim, writing on behalf of Christianity, says that the Epistle of Polycarp to the Philippians is by some treated as genuine and by others as spurious, and that it is no easy matter to decide.
"Theological Essays"
Charles Bradlaugh
Euodias and Syntyche, who are mentioned in the Epistle to the Philippians, were, there is every reason to believe, in this same order of the ministry.
"Women of Early Christianity Woman: In all ages and in all countries, Vol. 3 (of 10)"
Alfred Brittain Mitchell Carroll