He is called "our fellow-labourer." The designation may imply some actual co-operation at a former time. But more probably, the phrase, like the similar one in the next verse, "our fellow-soldier," is but Paul's gracefully affectionate way of lifting these good people's humbler work out of its narrowness, by associating it with his own. They in their little sphere, and he in his wider, were workers at the same task. All who toil for furtherance of Christ's kingdom, however widely they may be parted by time or distance, are fellow-workers. Division of labour does not impair unity of service. The field is wide, and the months between seedtime and harvest are long; but all the husbandmen have been engaged in the same great work, and though they have toiled alone shall "rejoice together." The first man who dug a shovelful of earth for the foundations of Cologne Cathedral, and he who fixed the last stone on the topmost spire a thousand years after, are fellow-workers. So Paul and Philemon, though their tasks were widely different in kind, in range, and in importance, and were carried on apart and independent of each other, were fellow-workers. The one lived a Christian life and helped some humble saints in an insignificant, remote corner; the other flamed through the whole then civilized western world, and sheds light to-day: but the obscure, twinkling taper and the blazing torch were kindled at the same source, shone with the same light, and were parts of one great whole. Our narrowness is rebuked, our despondency cheered, our vulgar tendency to think little of modest, obscure service rendered by commonplace people, and to exaggerate the worth of the more conspicuous, is corrected by such a thought. However small may be our capacity or sphere, and however solitary we may feel, we may summon up before the eyes of our faith a mighty multitude of apostles, martyrs, toilers in every land and age as _our_--even our--work-fellows. The field stretches far beyond our vision, and many are toiling in it for Him, whose work never comes near ours. There are differences of service, but the same Lord, and all who have the same master are companions in labour. Therefore Paul, the greatest of the servants of Christ, reaches down his hand to the obscure Philemon, and says, "He works the work of the Lord, as I also do."
In the house at Colossae there was a Christian wife by the side of a Christian husband; at least, the mention of Apphia here in so prominent a position is most naturally accounted for by supposing her to be the wife of Philemon. Her friendly reception of the runaway would be quite as important as his, and it is therefore most natural that the letter bespeaking it should be addressed to both. The probable reading "our sister" (R.V.), instead of "our beloved" (A.V.), gives the distinct assurance that she too was a Christian, and like-minded with her husband.
The prominent mention of this Phrygian matron is an illustration of the way in which Christianity, without meddling with social usages, introduced a new tone of feeling about the position of woman, which gradually changed the face of the world, is still working, and has further revolutions to affect. The degraded classes of the Greek world were slaves and women. This Epistle touches both, and shows us Christianity in the very act of elevating both. The same process strikes the fetters from the slave and sets the wife by the side of the husband, "yoked in all exercise of noble end,"--namely, the proclamation of Christ as the Saviour of all mankind, and of all human creatures as equally capable of receiving an equal salvation. That annihilates all distinctions. The old world was parted by deep gulfs. There were three of special depth and width, across which it was hard for sympathy to fly. These were the distinctions of race, sex, and condition. But the good news that Christ has died for all men, and is ready to live in all men, has thrown a bridge across, or rather has filled up, the ravine; so the Apostle bursts into his triumphant proclamation, "There is neither Jew nor Greek, there is neither bond nor free, there is neither male nor female; for ye are all one in Christ Jesus."