|87: Papyrus 87, recto, Philemon 24-25, c 250 CE|
the epistle, "To this epistle alone did its brevity avail itself against the falsifying hands of Marcion,"  And so I have found in this letter, like all the others, a layer of material, albeit smaller in this brief one, with a distinct Catholic flavor. To be fair the Catholic text as Tertullian knew it may not have included some of the material we have today. Only small scraps survived from before the Decian  persecution, so we can only guess the content of the text before the mid 3rd century.
Philemon is no different than any other Pauline text. Even in it's brief form it possesses openings, closings, and formulas from additional hands. The Marcionite construction could not assume the content. But a lack of Patristic commentary meant that my efforts had to rely upon the vocabulary,