John Trapp on Philippians 1:5

Verſe 5. For your fellowſhip] A good man cannot tell how to go to heaven alone. No ſooner had the Philippians received the Goſpel, but they were in fellowſhip to a day. The communion of Saints was with them a point of practice, as well as an article of belief. The apoſtles Creed was anciently briefer then now. The mention of the Fathers being maker of heaven and earth, The Sons death and deſcending into hell, and the communion of Saints being wholly omitted: haply as implied ſufficiently in other Articles. But ſurely if the Creed were called Symbalum, as a ſign or badge to difference Chriſtians from Infidels and wicked people, there was little reaſon to leave out the Communion of Saints, this being a main diſtinctive character: there being no ſuch fellowſhip as among the Saints, Cant. 6.9.