Philippians 2:17 - Clarke's commentary and critical notes on the Bible

Yea, and if I be offered upon the sacrifice and service of your faith, I joy, and rejoice with you all. Yea, and if I be offered upon the sacrifice and service - The metaphor appears to be still carried on. As it was customary for the weather-beaten mariner, when he had gained his port, to offer a sacrifice, θυσια, to God, of some particular animal which he had vowed while in his state of danger, and this was considered to be a religious service, λειτουργια· the apostle, pursuing the idea, states himself to be willing to become the libation, (for so much the word σπενδομαι imports), that was to be poured upon the sacrifice. Parkhurst observes that the apostle compares the faith of the Philippians to the sacrificial victim, and his own blood shed in martyrdom to the libation, i.e. the wine poured out on occasion of the sacrifice. Raphelius observes that Arrian uses the phrase σπενδειν επι τῃ θυσιᾳ for pouring out the libation after the sacrifice. The apostle had guided them safely into port; their faith in the atoning death of Christ was their sacrifice; and he was willing that his blood in martyrdom should be poured out as a libation on that sacrificial offering.