Notice the Apostle's conception of the function which believers are to discharge in the world. They are set in the midst of a crooked and perverse nation. These words were applied to the children of Israel of old on account of the stubborn insubordination with which they dealt with God; and they were applicable, for the same reason, to the Gentiles, among whom the gospel had come, but who had not bowed to it. Judged by the high and true standard, these Gentiles were crooked and perverse in their ways with one another, and still more so in their ways with God. Among them the Christians were to show what Christianity was, and what it could do. In the Christians was to appear, embodied, the testimony proposed to the crooked and perverse nation, a testimony against its perverseness, and yet revealing a remedy for it. In the persons of men, themselves originally crooked and perverse, this was to become plain and legible. Now how? Why, by their being blameless and harmless, the sons of God without rebuke.

It has been remarked already that the special way in which we are to manifest to the world the light of Christianity is here represented as the way of blamelessness. That man aright represents the mind of Christ to the world, who in the world keeps himself unspotted from the world,—in whom men recognise a character that traces up to a purer source elsewhere. As years pass, as cross lights fall upon the life, even in its most common and private workings, if it still proves that the man is cleansed by the faith he holds, if the unruly working of interest, and passion, and will, give way in him to motives of a higher strain, men will be impressed. They will own that here is something rare and high, and that some uncommon cause is at the bottom of it. For the world knows well that even the better sort of men have their weaker side, often plainly enough revealed by the trials of time. Therefore steadfast purity makes, at last, a deep impression.

Innocence indeed is not the whole duty of a Christian; active virtue is required as well. The harmlessness called for is not a mere negative quality—it is supposed to be exhibited in an active life which strives to put on Christ Jesus. But the Apostle seems to lay stress especially on a certain quiet consistency, on a lowly and loving regard to the whole standard, which gives evenness and worthiness to the life. If you will do a Christian's office to the "perverse nation," you have to seek that they may have nothing against you except concerning the law of your God; you have to seek that your reproach may be exclusively the reproach of Christ: so that if at any time the malice of men seeks to misconstrue your actions, and lays to your charge things which you know not, your well-doing may silence them; and having no evil thing to say of you, they may be ashamed that falsely accuse your good conversation in Christ.

Strong appeals are made in our day to members of the Christian Church to engage actively in all kinds of Christian work. They are summoned to go forth aggressively upon the world's misery and sin. This has become a characteristic note of our time. Such appeals were needed. It is a shame that so many Christians have absolved themselves from the obligation to place at their Lord's service the aptitudes and the energies with which He has endowed them. Yet in this wholesale administration diversities are apt to be overlooked. Christians may be undervalued who do not possess qualities fitting them for the special activities; or, attempting these without much aptitude, and finding little success, they may be unduly cast down. It is important to lay stress on this. There are some, perhaps we should say many, who must come to the conclusion, if they judge aright, that their gifts and opportunities indicate for them, as their sphere, a somewhat narrow round of duties, mostly of that ordinary type which the common experience of human life supplies. But if they bring into these a Christian heart; if they use the opportunities they have; if they are watchful to please their Lord in the life of the family, the workshop, the market; if the purifying influence of the faith by which they live comes to light in the steady excellence of their character and course,—then they need have no sense of exclusion from the work of Christ and of His Church. They, too, do missionary work. Blameless, harmless, unrebuked, they are seen as lights in the world. They contribute, in the manner that is most essential of all, to the Church's office in the world. And their place of honour and reward shall be far above that of many a Christian busybody, who is too much occupied abroad to keep the light clear and bright at home.

Blameless, then, harmless, unaspersed, must the children of God, His redeemed children, be. So will the light of Christian character come clearly out, and Christians will be "luminaries, holding forth the word of life."

The word of life is the message of salvation as it sets forth to us Christ, and goodness and blessedness by Him. Substantially it is that teaching which we have in the Scriptures; although, when Paul wrote, the New Testament was not yet a treasure of the Churches, and the "word of life" only echoed to and fro from teacher to taught, and from one disciple to another. Still, the teaching rested on the Old Testament Scriptures understood in the light of the testimony of Jesus; and it was controlled and guided by men speaking and writing in the Spirit. What it was therefore was very well known, and the influence of it as the seed of life eternal was felt. It was for Christians to hold by it, and to hold it out,—the expression used in ver. 16 may have either meaning; and virtually both senses are here. In order to give light there must be life. And Christian life depends on having in us the word, quick and powerful, which is to dwell in us richly in all wisdom and spiritual understanding. This must be the secret of blameless Christian lives; and so those who have this character will give light, as holding forth the word of life. The man's visible character itself does this. For while the word and message of life is to be owned, professed, in fit times proclaimed, yet the embodiment of it in the man is the main point here, the character being formed and the practice determined by the "word" believed. So also we are said to live by the faith of the Son of God. The life of faith on Him, is the life of having and holding forth His word.

Here, as everywhere, our Lord goes first. The Apostle John, speaking in his Gospel of the Eternal Word, tells us that in Him was life, and the life was the light of men. It was not merely a doctrine of light; the life was the light. As He lived, in His whole being, in His acting and suffering, in His coming and staying and departing, in His Person and in His discharge of every office, He manifested the Father. Still we find it so; as we contemplate Him, as His words leads us to Himself, we behold the glory, the radiance of grace and truth.

Now His people are made like Him. They too, through the word of life, become partakers of true life. This life does not dwell in them as it does in their Lord, for He is its original seat and source; hence they are not the light of the world in the same sense in which He is so. Still they are luminaries, they are stars in the world. By manifesting the genuine influence of the word of life which dwells in them, they do make manifest in the world what truth and purity and salvation are. This is their calling; and, in a measure, it is their attainment.

The view of the matter given here may be compared with that in 2 Cor. iii. 4. Christ, the Father's Word, may also be regarded as the Father's living Epistle. Then those who behold Him, and drink in the significance of this message, are also themselves, in their turn, Epistles of Christ, known and read of all men.

So to shine is the calling of all believers, not of some only; each, according to his opportunities, may and ought to fulfil it. God designs to be glorified, and to have His salvation justified, in this form. Christ has said, in the plainest terms, "Ye are the light of the world." But to be so implies separateness from the world, in root and in fruits; and that is for many a hard saying. "Ye are a holy nation, a peculiar people, that ye should show forth the praises of Him who called you out of darkness into His marvellous light."