https://biblehub.com/philippians/3-17.htm
In this verse Paul is exhorting the recipients to follow his own
example. The question is what was the example. When I read it first I
understood it as referring to his evangelism: i.e. instead resting on
having "become perfect", he engages in relentless evangelism. I thought
this followed from the context of earlier chapters. However When I
checked I didn't find any author who thought the example was of his
mission.
Another possible view in light of Carmen Christi (2:5-11) which shows
jesus denying himself and taking his cross, is that Paul did the same
and his holding himself up as an example for the Philippians to emulate.
Is the first view tenable? (without positing heresies or problems which
paul may be addressing)
[When I looked up wikipedia, it suggests that Phillipians is a composite
text made of different letters. This might weaken the dependence of 3:17
on chapter 2, but i don't think the claim is true. Also there is a
suggestion that statements on Epaphroditus are somehow contradictory,
and suggest fragmentation. This was explained, I think by FF Bruce:
Epaphroditus was carrying the "gift" from the Philippians to Paul at Rome
and fell sick during his journey, which delayed him from reaching
Paul. He reaches Paul, and Paul sends him back with the letter instead
of requiring his services at Rome]