{That I may be a joint partaker thereof} (hina sunkoin(936e)os
autou gen(936d)ai). Literally, That I may become co-partner with
others in the gospel. The point is that he may be able to share
the gospel with others, his evangelistic passion. Sunkoin(936e)os
is a compound word (sun, together with, koin(936e)os, partner or
sharer). We have two genitives with it in  Php 1:7 , though en
and the locative is used in  Re 1:9 . It is found only in the
N.T. and a late papyrus. Paul does not wish to enjoy the gospel
just by himself.