4:6-8 The blood of the martyrs, though not a sacrifice of atonement, yet was a sacrifice of acknowledgment to the grace of God and his truth. Death to a good man, is his release from the imprisonment of this world, and his departure to the enjoyments of another world. As a Christian, and a minister, Paul had kept the faith, kept the doctrines of the gospel. What comfort will it afford, to be able to speak in this manner toward the end of our days! The crown of believers is a crown of righteousness, purchased by the righteousness of Christ. Believers have it not at present, yet it is sure, for it is laid up for them. The believer, amidst poverty, pain, sickness, and the agonies of death, may rejoice; but if the duties of a man's place and station are neglected, his evidence of interest in Christ will be darkened, and uncertainty and distress may be expected to cloud and harass his last hours.
6. Greek, "For I am already being offered"; literally, as a libation; appropriate to the shedding of his blood. Every sacrifice began with an initiatory libation on the victim's head (compare Note, see on Php 2:17). A motive to stimulate Timothy to faithfulness—the departure and final blessedness of Paul; it is the end that crowns the work [Bengel]. As the time of his departure was indicated to Peter, so to Paul (2Pe 1:14).
my departure—literally, "loosing anchor" (see on Php 1:23). Dissolution.