Neither in tongue - In making professions of love, and of a charitable and humane disposition, and resting there; but in deed - by humane and merciful acts;
And in truth - Feeling the disposition of which we speak. There is a good saying in Yalcut Rubeni, fol. 145, 4, on this point: "If love consisted in word only, then love ceaseth as soon as the word is pronounced. Such was the love between Balak and Balaam. But if love consisteth not in word, it cannot be dissolved; such was the love of Abraham, Isaac, Jacob, and the rest of the patriarchs which were before them."
Verse 19
Hereby we know that we are of the truth - That we have the true religion of the Lord Jesus, and shall assure our hearts - be persuaded in our consciences, that we have the truth as it is in Jesus; as no man can impose upon himself by imagining he loves when he does not: he may make empty professions to others, but if he loves either God or man, he knows it because he feels it; and love unfelt is not love, it is word or tongue. This the apostle lays down as a test of a man's Christianity, and it is the strongest and most infallible test that can be given. He that loves feels that he does love; and he who feels that he loves God and man has true religion; and he who is careful to show the fruits of this love, in obedience to God and humane acts to man, gives others the fullest proof that he has the loving mind that was in Jesus.
Verse 20
If our heart condemn us - If we be conscious that our love is feigned, we shall feel inwardly condemned in professing to have what we have not. And if our heart condemn us, God is greater than our heart, for he knows every hypocritical winding and turning of the soul, he searches the heart, and tries the reins, and sees all the deceitfulness and desperate wickedness of the heart which we cannot see, and, if we could see them, could not comprehend them; and as he is the just Judge, he will condemn us more strictly and extensively than we can be by our own conscience.
Verse 21
If our heart condemn us not - If we be conscious to ourselves of our own sincerity, that we practice not deceit, and use no mask, then have we confidence toward God - we can appeal to him for our sincerity, and we can come with boldness to the throne of grace, to obtain mercy, and find grace to help in time of need. And therefore says the apostle,
Verse 22
Whatsoever we ask - In such a spirit, we receive of him, for he delights to bless the humble, upright, and sincere soul.
Because we keep his commandments - Viz., by loving him and loving our neighbor. These are the great commandments both of the old covenant and the new. And whoever is filled with this love to God and man will do those things which are pleasing to him; for love is the very soul and principle of obedience.
The word heart is used in the preceding verses for conscience; and so the Greek fathers interpret it, particularly Origen, Nicephorus, and Ecumenius; but this is not an unfrequent meaning of the word in the sacred writings.
Verse 23
That we should believe on the name of his Son - We are commanded to believe on Christ, that for the sake of his passion and death we may be justified from all things from which we could not be justified by the law of Moses; and being through him redeemed from the guilt of sin, restored to the Divine favor, and made partakers of the Holy Ghost, we are enabled to love one another as he gave us commandment; for without a renewal of the heart, love to God and man is impossible, and this renewal comes by Christ Jesus.
Verse 24
Dwelleth in him - i.e. in God; and he - God, in him - the believer.
And hereby we know - We know by the Spirit which he hath given us that we dwell in God, and God in us. It was not by conjecture or inference that Christians of old knew they were in the favor of God, it was by the testimony of God's own Spirit in their hearts; and this testimony was not given in a transient manner, but was constant and abiding while they continued under the influence of that faith that worketh by love. Every good man is a temple of the Holy Ghost, and wherever he is, he is both light and power. By his power he works; by his light he makes both himself and his work known. Peace of conscience and joy in the Holy Ghost must proceed from the indwelling of that Holy Spirit; and those who have these blessings must know that they have them, for we cannot have heavenly peace and heavenly joy without knowing that we have them. But this Spirit in the soul of a believer is not only manifest by its effects, but it bears its own witness to its own indwelling. So that a man not only knows that he has this Spirit from the fruits of the Spirit, but he knows that he has it from its own direct witness. It may be said, "How can these things be?" And it may be answered, By the power, light, and mercy of God. But that such things are, the Scriptures uniformly attest, and the experience of the whole genuine Church of Christ, and of every truly converted soul, sufficiently proves. As the wind bloweth where it listeth, and we cannot tell whence it cometh and whither it goeth, so is every one that is born of the Spirit: the thing is certain, and fully known by its effects; but how this testimony is given and confirmed is inexplicable. Every good man feels it, and knows he is of God by the Spirit which God has given him.
Introduction
We must not believe every teacher who professes to have a Divine commission to preach, but try such, whether they be of God; and the more so because many false prophets are gone out into the world, [1Jn 4:1]. Those who deny that Jesus Christ is come in the flesh have the spirit of antichrist, [1Jn 4:2], [1Jn 4:3]. The followers of God have been enabled to discern and overcome them, [1Jn 4:4-6]. The necessity of love to God and one another shown, from God's love to us, [1Jn 4:7-11]. Though no man hath seen God, yet every genuine Christian knows him by the spirit which God has given him, [1Jn 4:12], [1Jn 4:13]. The apostles testified that God sent his Son to be the Savior of the world; and God dwelt in those who confessed this truth, [1Jn 4:14], [1Jn 4:15]. God is love, [1Jn 4:16]. The nature and properties of perfect love, [1Jn 4:17], [1Jn 4:18]. We love him because he first loved us, [1Jn 4:19]. The wickedness of pretending to love God while we hate one another, [1Jn 4:20], [1Jn 4:21].
Verse 1
Beloved, believe not every spirit - Do not be forward to believe every teacher to be a man sent of God. As in those early times every teacher professed to be inspired by the Spirit of God, because all the prophets had come thus accredited, the term spirit was used to express the man who pretended to be and teach under the Spirit's influence. See [1Cor 12:1-12]; [1Tim 4:1].
Try the Spirits - Δοκιμαζετε τα πνευματα· Put these teachers to the proof. Try them by that testimony which is known to have come from the Spirit of God, the word of revelation already given.
Many false prophets - Teachers not inspired by the Spirit of God, are gone out into the world - among the Jewish people particularly, and among them who are carnal and have not the Spirit.
Verse 2
Hereby know ye the Spirit of God - We know that the man who teaches that Jesus Christ is the promised Messiah, and that he is come in the flesh, is of God - is inspired by the Divine Spirit; for no man can call Jesus Lord but by the Holy Ghost.
Verse 3
Every spirit - Every teacher, that confesseth not Jesus, is not of God - has not been inspired by God. The words εν σαρκι εληλυθοτα, is come in the flesh, are wanting in AB, several others, both the Syriac, the Polyglot Arabic, Ethiopic, Coptic, Armenian, and Vulgate; in Origen, Cyril, Theodoret, Irenaeus, and others. Griesbach has left them out of the text.
Spirit of antichrist - All the opponents of Christ's incarnation, and consequently of his passion, death, and resurrection, and the benefits to be derived from them.
Ye have heard that it should come - See [2Thes 2:7].
Even now already is it in the world - Is working powerfully both among the Jews and Gentiles.
Verse 4
Ye are of God - Ye are under the influence of the Divine Spirit, and have overcome them - your testimony, proceeding from the Spirit of Christ, has invalidated theirs which has proceeded from the influence of Satan; for greater is the Holy Spirit which is in you, than the spirit which is in the world.
Verse 6
We are of God - We, apostles, have the Spirit of God, and speak and teach by that Spirit. He that knoweth God - who has a truly spiritual discernment, heareth us - acknowledges that our doctrine is from God; that it is spiritual, and leads from earth to heaven.
Hereby know we the Spirit of truth - The doctrine and teacher most prized and followed by worldly men, and by the gay, giddy, and garish multitude, are not from God; they savor of the flesh, lay on no restraints, prescribe no cross-bearing, and leave every one in full possession of his heart's lusts and easily besetting sins. And by this, false doctrine and false teachers are easily discerned.
Verse 7
Beloved, let us love one another - And ever be ready to promote each other's welfare, both spiritual and temporal.
For love is of God - And ever acts like him; he loves man, and daily loads him with his benefits. He that loveth most has most of God in him; and he that loveth God and his neighbor, as before described and commanded, is born of God, εκ του Θεου γεγεννηται, is begotten of God - is a true child of his heavenly Father, for he is made a partaker of the Divine nature; and this his love to God and man proves.
Verse 8
He that loveth not - As already described, knoweth not God - has no experimental knowledge of him.
God is love - An infinite fountain of benevolence and beneficence to every human being. He hates no thing that he has made. He cannot hate, because he is love. He causes his sun to rise on the evil and the good, and sends his rain on the just and the unjust. He has made no human being for perdition, nor ever rendered it impossible, by any necessitating decree, for any fallen soul to find mercy. He has given the fullest proof of his love to the whole human race by the incarnation of his Son, who tasted death for every man. How can a decree of absolute, unconditional reprobation, of the greater part or any part of the human race, stand in the presence of such a text as this? It has been well observed that, although God is holy, just, righteous, etc., he is never called holiness, justice, etc., in the abstract, as he is here called Love. This seems to be the essence of the Divine nature, and all other attributes to be only modifications of this.
Verse 9
In this was manifested the love of God - The mission of Jesus Christ was the fullest proof that God could give, or that man could receive, of his infinite love to the world.
That we might live through him - The whole world was sentenced to death because of sin; and every individual was dead in trespasses and sins; and Jesus came to die in the stead of the world, and to quicken every believer, that all might live to him who died for them and rose again. This is another strong allusion to [Joh 3:16] : God so loved the world, that he gave his only-begotten Son, that whosoever believeth in him should not perish, but have everlasting life; where the reader is requested to see the note on [Joh 3:16].