The seventh verse may be supposed either to look backward to what immediately preceded (and then it is walking as Christ walked that is here represented as no new, but an old commandment; it is that which the apostles would certainly inculcate wherever they brought Christ's gospel), or to look forward to what the apostle is now going to recommend, and that is the law of fraternal love; this is the message heard from the beginning (Jo1 3:11), and the old commandment, Jo2 1:5. Now, while the apostle addresses himself to the recommendation of such a practice, he is ready to give an instance thereof in his affectionate appellation: "Brethren, you who are dear to me in the bond of that love to which I would solicit you;" and so the precept of fraternal love is recommended,

I.As an old one: I write no new commandment unto you, but an old commandment, which you had from the beginning, Jo1 2:7. The precept of love must be as old as human nature; but it might admit divers enactions, enforcements, and motives. In the state of innocence, had human nature then been propagated, men must have loved one another as being of one blood, made to dwell on the earth, as being God's offspring, and bearing his image. In the state of sin and promised recovery, they must love one another as related to God their Maker, as related to each other by blood, and as partners in the same hope. When the Hebrews were peculiarly incorporated, they must accordingly love each other, as being the privileged people, whose were the covenants and the adoption, and of whose race the Messiah and head of the church must spring; and the law of love must be conveyed with new obligations to the new Israel of God, to the gospel church, and so it is the old commandment, or the word which the children of the gospel Israel have heard from the beginning, Jo1 2:7.

II.As a new one: "Again, to constrain you to this duty the more, a new commandment I write unto you, the law of the new society, the Christian corporation, which thing is true in him, the matter of which was first true in and concerning the head of it; the truth of it was first and was abundantly in him; he loved the church, and gave himself for it: and it is true in you; this law is in some measure written upon your hearts; you are taught of God to love one another, and that because" (or since, or forasmuch as) "the darkness is past, the darkness of your prejudiced unconverted (whether Jewish or Gentile) minds, your deplorable ignorance of God and of Christ is now past, and the true light now shineth (Jo1 2:8); the light of evangelical revelation hath shone with life and efficacy into your hearts; hence you have seen the excellency of Christian love, and the fundamental obligation thereto." Hence we see that the fundamentals (and particularly the fundamental precepts) of the Christian religion may be represented either as new or old; the reformed doctrine, or doctrine of religion in the reformed churches, is new and old - new, as taught after long darkness, by the lights of the reformation, new as purged from the adulterations of Rome; but old as having been taught and heard from the beginning. We should see that that grace or virtue which was true in Christ be true also in us; we should be conformable to our head. The more our darkness is past, and gospel light shines unto us, the deeper should our subjection be to the commandments of our Lord, whether considered as old or new. Light should produce a suitable heat. Accordingly, here is another trial of our Christian light; before, it was to be approved by obedience to God; here by Christian love. 1. He who wants such love in vain pretends his light: He that saith he is in the light, and hateth his brother, is in darkness even unto now, Jo1 2:9. It is proper for sincere Christians to acknowledge what God has done for their souls; but in the visible church there are often those who assume to themselves more than is true, there are those who say they are in the light, the divine revelation has made its impression upon their minds and spirits, and yet they walk in hatred and enmity towards their Christian brethren; these cannot be swayed by the sense of the love of Christ to their brethren, and therefore remain in their dark state, notwithstanding their pretended conversion to the Christian religion. 2. He who is governed by such love approves his light to be good and genuine: He that loveth his brother (as his brother in Christ) abideth in the light, Jo1 2:10. He sees the foundation and reason of Christian love; he discerns the weight and value of the Christian redemption; he sees how meet it is that we should love those whom Christ hath loved; and then the consequence will be that there is no occasion of stumbling in him (Jo1 2:10); he will be no scandal, no stumbling-block, to his brother; he will conscientiously beware that he neither induce his brother to sin nor turn him out of the way of religion, Christian love teaches us highly to value our brother's soul, and to dread every thing that will be injurious to his innocence and peace. 3. Hatred is a sign of spiritual darkness: But he that hateth his brother is in darkness, Jo1 2:11. Spiritual light is instilled by the Spirit of grace, and one of the first-fruits of that Spirit is love; he then who is possessed with malignity towards a Christian brother must needs be destitute of spiritual light; consequently he walks in darkness (Jo1 2:11); his life is agreeable to a dark mind and conscience, and he knows not whither he goes; he sees not whither this dark spirit carries him, and particularly that it will carry him to the world of utter darkness, because darkness hath blinded his eyes, Jo1 2:11. The darkness of regeneracy, evidenced by a malignant spirit, is contrary to the light of life; where that darkness dwells, the mind, the judgment, and the conscience will be darkened, and so will mistake the way to heavenly endless life. Here we may observe how effectually our apostle is now cured of his once hot and flaming spirit. Time was when he was for calling for fire from heaven upon poor ignorant Samaritans who received them not, Luk 9:54. But his Lord had shown him that he knew not his own spirit, nor whither it led him. Having now imbibed more of the Spirit of Christ, he breathes out good-will to man, and love to all the brethren. It is the Lord Jesus that is the great Master of love: it is his school (his own church) that is the school of love. His disciples are the disciples of love, and his family must be the family of love.

Which thing is true in him and in you - It is true that Christ loved the world so well as to lay down his life for it; and it was true in them, in all his faithful followers at that time, who were ready to lay down their lives for the testimony of Jesus. There is a saying in Synopsis Sohar, p. 94, n. 51, that may cast some light on this passage: That way in which the just have walked, although it be Old, yet may be said to be New in the love of the righteous. The love that the righteous bear to God and to each other is a renewal of the commandment.

The darkness is past - The total thick darkness of the heathen world, and the comparative darkness of the Mosaic dispensation, are now passing away; and the pure and superior light of Christianity is now diffusing its beams everywhere. He does not say that the darkness was all gone by, but παραγεται, it is passing away; he does not say that the fullness of the light had appeared, but ηδη φαινει, it is now shining and will shine more and more to the perfect day; for the darkness passes away in proportion as the light shines and increases.

Again, a new commandment I write unto you,.... Which is the same with the former, considered in different respects. The command of brotherly love is a new one; that is, it is an excellent one, as a new name is an excellent name, and a new song is an excellent one; it is renewed by Christ under the Gospel dispensation; it is newly explained by him, and purged from the false glosses of the Scribes and Pharisees; see Mat 5:43; and enforced by him with a new argument, and by a new example of his own, even his own love to his people; and which is observed by them in a new manner, they being made new creatures; and this law being anew written in their hearts, under the renewing work of the Spirit of God, as a branch of the new covenant of grace; see Joh 13:34. The Jews (c) expect , "a new law" to be given them by the bands of the Messiah; and a new one he has given, even the new commandment of love, and which is the fulfilling of the law.

Which things is true in him, and in you. The Alexandrian copy reads, "in us"; the sense is either, it is true "in itself", as the phrase will bear to be rendered, and it is verified in you, or in us, to be a new commandment; or it is true in Christ, it is yea and amen in him; it has its full completion in him, who is the fulfilling end of the law, as well as it has been faithfully delivered, truly explained, and warmly and affectionately recommended and urged by him; and he is the great pattern and exemplar of it: and the love which this new commandment requires is really and truly in the saints, implanted in them in regeneration, is a fruit of the Spirit, and which faith works by, and will always continue in them; and should be in its actings like Christ's, true, sincere, cordial, affectionate, constant, and universal: and some think the word or "is", or "let it be", is wanting in the last clause, and may be read, "which thing is true in him, and is", or "let it be in you": that is, as love to the brethren is true and sincere in Christ, so it is, or should be in you; it should be without dissimulation, and so it was, as the reason following shows:

because the darkness is past, or is "passing"; meaning either the darkness of the ceremonial law, which lay in dark types and shadows, and in cloudy sacrifices, and mystical representations of things, and was a shadow of good things to come; and its shadows were now fleeing away apace, in fact as well as in right; and so the Alexandrian copy reads, "because the shadow is passing away"; the night of Jewish darkness was far spent, and the Gospel day was not only broke, but it was, or near noonday, which brought the light of faith, and the heat of love with it: or else the darkness of sin and ignorance, of a state of nature, and of the kingdom of Satan, in which the people of God are before conversion; which then passes away gradually, by little and little, for it is not removed at once, or wholly gone; for though the saints are at once removed out of a state of darkness, and from the kingdom of darkness, and the power of it, yet they are not wholly free from the darkness of sin and ignorance, they still see but through a glass darkly: and the words are better rendered, the darkness passes", or "is passing away", and not is past", or "has passed away"; for as yet it is not entirely gone;

and the true light now shineth; either the Gospel, which is a light, and a true and substantial one, in distinction from the dim light of nature, or the shadowy law of Moses; and which now, under the present dispensation, shines out in a most glorious manner, as the sun in its full strength; and so the Ethiopic version renders it, "the light of truth"; the word of truth, the Gospel of our salvation: or Jesus Christ, who is so called, Joh 1:9; in distinction from typical lights, as the "Urim" on the high priest's breastplate, the candlestick in the tabernacle and temple, and the pillar of fire by night, which guided the Israelites through the wilderness; and in opposition to all false lights, to the Scribes and Pharisees, to false Christs and false prophets, which are so many "ignes fatui"; but Christ is the sun of righteousness that is risen in our "horizon", and the true light which shines out in a most illustrious manner: or the light of grace is here intended, that light which the Spirit of God illuminates with in conversion; in which a man sees sin in its true colours, and has a spiritual and saving sight of Christ, of pardon, peace, life, righteousness, and salvation by him; which is no other than the light of faith, by which an enlightened person sees the Son, looks to him, and has an evidence of the unseen glories of another world. Now this is a true light, things are seen by the believer in a right light, both his own sins, and the person, blood, and righteousness of Christ; this is a shining one, which cannot but be observed by himself, and shines more and more to the perfect day; and it now shines as it did not before, in a state of nature, and continues to shine, and ever will: this light will never be put out, and is the cause of brotherly love, being truly in the saints, and of the continuance of it; before this light shines, men live in malice, but when it comes and shines, as they walk in light, they walk in love.

(c) Yalkut Simconi, par. 2. fol. 461.

a new commandment--It was "old," in that Christians as such had heard it from the first; but "new" (Greek, "kaine," not "nea": new and different from the old legal precept) in that it was first clearly promulgated with Christianity; though the inner spirit of the law was love even to enemies, yet it was enveloped in some bitter precepts which caused it to be temporarily almost unrecognized, till the Gospel came. Christianity first put love to brethren on the new and highest MOTIVE, instinctive love to Him who first loved us, constraining us to love all, even enemies, thereby walking in the steps of Him who loved us when enemies. So Jesus calls it "new," Joh 13:34-35, "Love one another as I have loved you" (the new motive); Joh 15:12.

which thing is true in him and in you--"In Christ all things are always true, and were so from the beginning; but in Christ and in us conjointly the commandment [the love of brethren] is then true when we acknowledge the truth which is in Him, and have the same flourishing in us" [BENGEL]. ALFORD explains, "Which thing (the fact that the commandment is a new one) is true in Him and in you because the darkness is passing away, and the true light is now shining; that is, the commandment is a new one, and this is true both in the case of Christ and in the case of you; because in you the darkness is passing away, and in Him the true light is shining; therefore, on both accounts, the command is a new one: new as regards you, because you are newly come from darkness into light; new as regards Him, because He uttered it when He came into the world to lighten every man, and began that shining which even now continues." I prefer, as BENGEL, to explain, The new commandment finds its truth in its practical realization in the walk of Christians in union with Christ. Compare the use of "verily," Jo1 2:5. Joh 4:42, "indeed"; Joh 6:55. The repetition of "in" before "you," "in Him and in you," not "in Him and you" implies that the love commandment finds its realization separately: first it did so "in Him," and then it does so "in us," in so far as we now "also walk even as He walked"; and yet it finds its realization also conjointly, by the two being united in one sentence, even as it is by virtue of the love commandment having been first fulfilled in Him, that it is also now fulfilled in us, through His Spirit in us: compare a similar case, Joh 20:17, "My Father and your Father"; by virtue of His being "My Father," He is also your Father.

darkness is past--rather, as in Jo1 2:17, "is passing away." It shall not be wholly "past" until "the Sun of righteousness" shall arise visibly; "the light is now shining" already, though but partially until the day bursts forth.