This Epistle stands alone among Paul's letters in being addressed to a private Christian, and in being entirely occupied with a small though very singular private matter; its aim being merely to bespeak a kindly welcome for a runaway slave who had been induced to perform the unheard-of act of voluntarily returning to servitude. If the New Testament were simply a book of doctrinal teaching, this Epistle would certainly be out of place in it; and if the great purpose of revelation were to supply material for creeds, it would be hard to see what value could be attached to a simple, short letter, from which no contribution to theological doctrine or ecclesiastical order can be extracted. But if we do not turn to it for discoveries of truth, we can find in it very beautiful illustrations of Christianity at work. It shows us the operation of the new forces which Christ has lodged in humanity--and that on two planes of action. It exhibits a perfect model of Christian friendship, refined and ennobled by a half-conscious reflection of the love which has called us "no longer slaves but friends," and adorned by delicate courtesies and quick consideration, which divines with subtlest instinct what it will be sweetest to the friend to hear, while it never approaches by a hair-breadth to flattery, nor forgets to counsel high duties. But still more important is the light which the letter casts on the relation of Christianity to slavery, which may be taken as a specimen of its relation to social and political evils generally, and yields fruitful results for the guidance of all who would deal with such. It may be observed, too, that most of the considerations which Paul urges on Philemon as reasons for his kindly reception of Onesimus do not even need the alteration of a word, but simply a change in their application, to become worthy statements of the highest Christian truths. As Luther puts it, "We are all God's Onesimuses"; and the welcome which Paul seeks to secure for the returning fugitive, as well as the motives to which he appeals in order to secure it, do shadow forth in no uncertain outline our welcome from God, and the treasures of His heart towards us, because they are at bottom the same. The Epistle then is valuable, as showing in a concrete instance how the Christian life, in its attitude to others, and especially to those who have injured us, is all modelled upon God's forgiving love to us. Our Lord's parable of the forgiven servant who took his brother by the throat finds here a commentary, and the Apostle's own precept, "Be imitators of God, and walk in love," a practical exemplification.