But a danger exists on the other side. It may be, that we love the brethren because they are pleasant to us; they furnish us with agreeable society, in which our conscience is not wounded. A counter-proof is therefore given us. “Hereby we know that we love the children of God, if we love God and keep his commandments.” It is not as children of God that I love the brethren, unless I love God of whom they are born. I may love them individually as companions, or I may love some among them, but not as the children of God, if I do not love God Himself. If God Himself has not His true place in my heart, that which bears the name of love to the brethren shuts out God; and that in so much the more complete and subtle manner, because our link with them bears the sacred name of brotherly love.
Now there is a touchstone even for this love of God namely, obedience to His commands. If I walk with the brethren themselves in disobedience to their Father, it is certainly not because they are His children that I love them. If it were because I loved the Father and because they were His children, I should assuredly like them to obey Him. To walk then in disobedience with the children of God, under the pretext of brotherly love, is not to love them as the children of God. If I loved them as such, I should love their Father and my Father, and I could not walk in disobedience to Him and call it a proof that I loved them because they were His.
If I also loved them because they were His children, I should love all who are such, because the same motive engages me to love them all.
The universality of this love with regard to all the children of God; its exercise in practical obedience to His will: these are the marks of true brotherly love. That which has not these marks is a mere carnal party spirit, clothing itself with the name and the form of brotherly love. Most certainly I do not love the Father if I encourage His children in disobedience to Him.
Now there is an obstacle to this obedience, and that is the world. The world has its forms, which are very far from obedience to God When we are occupied only with Him and His will, the world’s enmity soon breaks out. It also acts, by its comforts and its delights, on the heart of man as walking after the flesh. In short, the world and the commandments of God are in opposition to each other; but the commandments of God are not grievous to those who are born of Him, for he who is born of God overcomes the world. He possesses a nature and a principle that surmount the difficulties that the world opposes to his walk. His nature is the divine nature, for he is born of God; his principle is that of faith. His nature is insensible to the attractions which this world offers to the flesh, and that because it has, altogether apart from this world, a spirit independent of it, and an object of its own which governs it. Faith directs its steps, but faith does not see the world, nor that which is present. Faith believes that Jesus, whom the world rejected, is the Son of God. The world therefore has lost its power over it. Its affections and its trust are fixed on Jesus, who was crucified, owning Him as the Son of God. Thus the believer, detached from the world, has the boldness of obedience, and does the will of God which abides for ever.
The apostle sums up, in a few words, the testimony of God respecting the life eternal which He has given us.
This life is not in the first Adam, it is in the Second-in the Son of God. Man, as born of Adam, does not possess it, does not acquire it. He ought indeed to have gained life under the law. This characterised it, “Do this and live.” But man did not and could not.
God gives him eternal life, and this life is in His Son. He who has the Son has life, and he who has not the Son has not life.
Now what is the testimony rendered to this gift of life eternal? The witnesses are three: the Spirit, the water, and the blood. This Jesus, the Son of God, is He who came by water and by blood; not by water only, but by water and by blood. The Spirit also bears witness because He is truth. That to which they bear witness is that God has given us eternal life, and that this life is in His Son. But whence did this water and the blood flow? It was from the pierced side of Jesus. It is the judgment of death pronounced and executed (compare Rom. 8:3) on the flesh, on all that is of the old man, on the first Adam. Not that the sin of the first Adam was in the flesh of Christ, but that Jesus died in it as a sacrifice for sin. “In that he died he died unto sin once.” Sin in the flesh was condemned in the death of Christ in the flesh. There was no other remedy. The flesh could not be modified nor subjected to the law. The life of the first Adam was nothing but sin in the principle of its will; it could not be subject to the law. Our purification as to the old man is its death. He who is dead is justified from sin. We are therefore baptised to have part in the death of Jesus. We are crucified with Christ; nevertheless we live, but not we it is Christ who lives in us. Participating in the life of Christ risen, we reckon ourselves as dead with Him; for why live of this new life, this life of the second Adam, if we could live before God in the life of the first Adam? No; by living in Christ we have accepted by faith the sentence of death, passed by God on the first Adam. This is christian purification: even the death of the old man, because we are made partakers of life in Christ Jesus. “We are dead “-crucified with Him We need a perfect purification before God; we have it; for that which was impure no longer exists: what exists, as born of God, is perfectly pure.
He came by water-a powerful testimony, as flowing from the side of a dead Christ, that life is not to be sought for in the first Adam; for Christ, as coming for man, taking up his cause, the Christ come in the flesh, had to die: else He had remained alone in His own purity. Life is to be sought for in the Son of God risen from among the dead. Purification is by death.
But it was not by water only that He came; it was also by blood. The expiation of our sins was as necessary as the moral purification of our soul. We possess it in the blood of a slain Christ. Death alone could expiate them and blot them out. And Jesus died for us. The guilt of the believer no longer exists before God; Christ has put Himself in his place. The life is on high, and we are raised up together with Him, God having forgiven us all our trespasses. Expiation is by death.
The third witness is the Spirit: put first in the order of their testimony on earth, as He alone gives witness in power so that we know the other two; last, in their historic order, for such in fact was that order, death first and only thereafter the Holy Ghost.  In effect it is the testimony of the Spirit, His presence in us, which enables us to appreciate the value of the water and the blood. We should never have understood the practical bearing of the death of Christ, if the Holy Ghost were not to the new man a revealing power of its import and its efficacy. Now the Holy Ghost came down from a risen and ascended Christ; and thus we know that eternal life is given us in the Son of God.
The testimony of these three witnesses meets together in this same truth, namely, that grace-that God Himself-has given us eternal life; and that this life is in the Son. Man had nothing to do in it, except by his sins. It is the gift of God. And the life that He gives is in the Son. The testimony is the testimony of God. How blessed to have such a testimony, and that from God Himself, and in perfect grace!
We have then the three things: the cleansing, the expiation, and the presence of the Holy Ghost as the witness that eternal life is given us in the Son, who was slain for man when in relationship with man here below. He could but die for man s he is. Life is elsewhere, namely, in Himself.
Here the doctrine of the epistle ends. The apostle wrote these things in order that they who believed in the Son might know that they had eternal life. He does not give means of examination to make the faithful doubt whether they had eternal life; but–seeing that there were seducers who endeavoured to turn them aside as deficient in something important, and who presented themselves as possessing some superior light-he points out to them the marks of life, in order to re-assure them; developing the excellence of that life, and of their position as enjoying it; and in order that they might understand that God had given it to them, and that they might be in no wise shaken in mind.
He then speaks of the practical confidence in God which flows from all this-confidence exercised with a view to all our wants here below, all that our hearts desire to ask of God. We know that He always listens to everything that we ask in accordance with His will. Precious privilege! The Christian himself would not desire anything to be granted him that was contrary to the will of God. But for everything that is according to His will, His ear is ever open to us, ever attentive. He always hearkens; He is not like man, often occupied so that he cannot listen, or careless so that he will not. God always hears us, and assuredly He does not fail in power: the attention He pays us is a proof of His good-will. We receive therefore the things that we ask of Him. He grants our requests. What a sweet relationship! What a high privilege! And it is one also of which we may avail ourselves in charity for others.
If a brother sins and God chastises him, we may petition for that brother, and life shall be restored him. Chastisement tends to the death of the body (compare Job 33, 34; James 5:14, 16); we pray for the offender and he is healed. Otherwise the sickness takes its course. All unrighteousness is sin, and there is such sin as is unto death. This does not seem to me to be some particular sin, but all sin which has such a character that, instead of awakening christian charity, it awakens christian indignation. Thus Ananias and Sapphira committed a sin unto death. It was a lie, but a lie under such circumstances that it excited horror rather than compassion. We can easily understand this in other cases.
Thus far as to sin and its chastisement. But the positive side is also brought before us. As born of God, we do not commit sin at all, we keep ourselves, and “the wicked one toucheth us not.” He has nothing wherewith to entice the new man. The enemy has no objects of attraction to the divine nature in us, which is occupied, by the action of the Holy Ghost, with divine and heavenly things, or with the will of God. Our part therefore is so to live-the new man occupied with the things of God and of the Spirit.
The apostle ends his epistle by specifying these two things: our nature, our mode of being, as Christians; and the object that has been communicated to us in order to produce and nourish faith.
We know that we are of God; and that not in a vague way, but in contrast with all that is not us-a principle of immense importance, which makes christian position exclusive by.its very nature. It is not merely good, or bad, or better; but it is of God. And nothing which is not of God (that is to say, which has not its origin in Him) could have this character and this place. The whole world lies in the wicked one.
The Christian has the certainty of these two things by virtue of his nature. which discerns and knows that which is of God, and thereby judges all that is opposed to it. The two are not merely good and bad, but of God and of the enemy. This as to the nature.
With regard to the object of this nature, we know that the Son of God is come-a truth of immense importance also. It is not merely that there is good and that there is evil; but the Son of God has Himself come into this scene of misery, to present an object to our hearts. But there is more than this. He has given us an understanding that in the midst of all the falsehood of this world, of which Satan is the prince, we may know Him that is true-the true One. Immense privilege which alters our whole position! The power of the world by which Satan blinded us is completely broken, and we are brought into the true light; and in that light we see and know Him who is true, who is in Himself perfection; that by which all things can be perfectly discerned and judged according to truth. But this is not all. We are in this true One, partakers of His nature, and abiding in Him, and in order that we may enjoy the source of truth.  Now it is in Jesus that we are. It is thus, it is in Him, that we are in connection with the perfections of God.
We may again remark here-that which gives a character to the whole Epistle-the manner in which God and Christ are united in the apostle’s mind. It is on account of this that he so frequently says, “He,” when we must understand “Christ,” although he had previously spoken of God: for instance, chapter 5:20. And here, “We are in him that is true [that is to say], in his Son Jesus Christ. This is the true God and eternal life.”
Behold then the divine links of our position! We are in Him who is true; this is the nature of Him in whom we are. Now, in reality as to the nature, it is God Himself; as to the Person, and as to the manner of being in Him, it is His Son Jesus Christ. It is in the Son, in the Son as man, that we are in fact as to His Person; but He is the true God, the veritable God. Nor is this all; but we have life in Him. He is also the eternal life, so that we possess it in Him. We know the true God, we have eternal life.
All that is outside this is an idol. May God preserve us from it, and teach us by His grace to preserve ourselves from it! This gives occasion to the Spirit of God to speak of “the truth” in the two short Epistles that -follow.
 Even the orderly reception of the Holy Ghost was so. (see Acts 2:38)
 I have already noticed this passage as being a kind of key to the way we really know God, and dwell in Him. It speaks of God as Him we know, in whom we are, explaining it by saying, that it is in His Son Jesus Christ our Lord; only here, as follows in the text, it is truth and not love.