For your fellowship (epi th koinwniai umwn). "On the basis of your contribution" as in 2 Corinthians 8:4 ; 2 Corinthians 9:13 ; Acts 2:42 . The particular kind of "partnership" or "fellowship" involved is the contribution made by the Philippians for the spread of the gospel ( Acts 1:7sugkoinwnou and Acts 4:14 where sugkoinwnhsante occurs). In furtherance of the gospel (ei to euaggelion). "For the gospel." From the first day until now (apo th prwth hmera acri tou nun). As when in Thessalonica ( Philippians 4:15 ), in Corinth ( Acts 18:5 ; 2 Corinthians 11:7-10 ), and now in Rome.