After writing that the believers at Philippi ought to be shining as lights in the world, Paul now adds what he is willing to add to the faith life of the Philippians.
He says that he will be glad and rejoice with them all even if [he was] to be poured out as a drink offering upon the sacrificial offering of their faith (v.17). A drink offering (Numbers 15.4-5, 28.7) usually accompanied another sacrifice and enriched what was already given. So, in this case, Paul says the sacrificial offering of the Philippians is their faith and its service, their serving God and His purposes. If Paul is to be imminently martyred (as his grammar indicates), he is urging the Philippians to be glad and rejoice (v.18).
Paul is willing to be poured out as a drink offering to enrich the faith life of the Philippians,
and he wants them to rejoice and be joyful over this (cf. 1.19-26).
As for Paul and the Philippians, so for Jesus and you. He was willing to be poured out for you, He was willing to go beyond that and actually be the sacrifice, not simply enrich something else. This, of course, we cannot ever emulate for others. But, we can today certainly consider who around us we can enrich and encourage and equip and edify as a drink offering. As Paul was willing to do for the Philippians, go and be willing to do for someone today!
James Travis 