Here, I. The apostle encourages the disciples (to whom he writes) in these dangerous times, in this hour of seducers; he encourages them in the assurance of their stability in this day of apostasy: But you have an unction from the Holy One, and you know all things. We see, 1. The blessing wherewith they were enriched - an unguent from heaven: You have an unction. True Christians are anointed ones, their name intimates as much. They are anointed with the oil of grace, with gifts and spiritual endowments, by the Spirit of grace. They are anointed into a similitude of their Lord's offices, as subordinate prophets, priests, and kings, unto God. The Holy Spirit is compared to oil, as well as to fire and water; and the communication of his salvific grace is our anointing. 2. From whom this blessing comes - from the Holy One, either from the Holy Ghost or from the Lord Christ, as Rev 3:7, These things saith he that is holy - the Holy One. The Lord Christ is glorious in his holiness. The Lord Christ disposes of the graces of the divine Spirit, and he anoints the disciples to make them like himself, and to secure them in his interest. 3. The effect of this unction - it is a spiritual eye-salve; it enlightens and strengthens the eyes of the understanding: "And thereby you know all things (Jo1 2:20), all these things concerning Christ and his religion; it was promised and given you for that end," Joh 14:26. The Lord Christ does not deal alike by all his professed disciples; some are more anointed than others. There is great danger lest those that are not thus anointed should be so far from being true to Christ that they should, on the contrary, turn antichrists, and prove adversaries to Christ's person, and kingdom, and glory.

II.The apostle indicates to them the mind and meaning with which he wrote to them. 1. By way of negation; not as suspecting their knowledge, or supposing their ignorance in the grand truths of the gospel: "I have not written unto you because you know not the truth, Jo1 2:21. I could not then be so well assured of your stability therein, nor congratulate you on your unction from above." It is good to surmise well concerning our Christian brethren; we ought to do so till evidence overthrows our surmise: a just confidence in religious persons may both encourage and contribute to their fidelity. 2. By way of assertion and acknowledgment, as relying upon their judgment in these things: But because you know it (you know the truth in Jesus), and that no lie is of the truth. Those who know the truth in any respect are thereby prepared to discern what is contrary thereto and inconsistent therewith. Rectum est index sui et obliqui - The line which shows itself to be straight shows also what line is crooked. Truth and falsehood do not well mix and suit together. Those that are well acquainted with Christian truth are thereby well fortified against antichristian error and delusion. No lie belongs to religion, either natural or revealed. The apostles most of all condemned lies, and showed the inconsistency of lies with their doctrine: they would have been the most self-condemned persons had they propagated the truth by lies. It is a commendation of the Christian religion that it so well accords with natural religion, which is the foundation of it, that it so well accords with the Jewish religion, which contained the elements or rudiments of it. No lie is of the truth; frauds and impostures then are very unfit means to support and propagate the truth. I suppose it had been better with the state of religion if they had never been used. The result of them appears in the infidelity of our age; the detection of ancient pious frauds and wiles has almost run our age into atheism and irreligion; but the greatest actors and sufferers for the Christian revelation would assure us that no lie is of the truth.

III.The apostle further impleads and arraigns these seducers who had newly arisen. 1. They are liars, egregious opposers of sacred truth: Who is a liar, or the liar, the notorious liar of the time and age in which we live, but he that denieth that Jesus is the Christ? The great and pernicious lies that the father of lies, or of liars, spreads in the world, were of old, and usually are, falsehoods and errors relating to the person of Christ. There is no truth so sacred and fully attested but some or other will contradict or deny it. That Jesus of Nazareth was the Son of God had been attested by heaven, and earth, and hell. It should seem that some, in the tremendous judgment of God, are given up to strong delusions. 2. They are direst enemies to God as well as to the Lord Christ: He is antichrist who denieth the Father and the Son, Jo1 2:22. He that opposes Christ denies the witness and testimony of the Father, and the seal that he hath given to his Son; for him hath God the Father sealed, Joh 6:27. And he that denies the witness and testimony of the Father, concerning Jesus Christ denies that God is the Father of the Lord Jesus Christ, and consequently abandons the knowledge of God in Christ, and thereupon the whole revelation of God in Christ, and particularly of God in Christ reconciling the world unto himself; and therefore the apostle may well infer, Whosoever denies the Son the same has not the Father (Jo1 2:23); he has not the true knowledge of the Father, for the Son has most and best revealed him; he has no interest in the Father, in his favour, and grace, and salvation, for none cometh to the Father but by the Son. But, as some copies add, he that acknowledgeth the Son has the Father also, Jo1 2:23. As there is an intimate relation between the Father and the Son, so there is an inviolable union in the doctrine, knowledge, and interests of both; so that he who has the knowledge of, and right to, the Son, has the knowledge of, and right to, the Father also. Those that adhere to the Christian revelation hold the light and benefit of natural religion withal.

IV.Hereupon the apostle advises and persuades the disciples to continue in the old doctrine at first communicated to them: Let that therefore abide in you which you have heard from the beginning, Jo1 2:24. Truth is older than error. The truth concerning Christ, that was at first delivered to the saints, is not to be exchanged for novelties. So sure were the apostles of the truth of what they had delivered concerning Christ, and from him, that after all their toils and sufferings they were not willing to relinquish it. The Christian truth may plead antiquity, and be recommended thereby. This exhortation is enforced by these considerations: -

1.From the sacred advantage they will receive by adhering to the primitive truth and faith. (1.) They will continue thereby in holy union with God and Christ: If that which you have heard from the beginning shall remain in you, you also shall continue in the Son and in the Father, Jo1 2:24. It is the truth of Christ abiding in us that is the means of severing us from sin and uniting us to the Son of God, Joh 15:3, Joh 15:4. The Son is the medium or the Mediator by whom we are united to the Father. What value then should we put upon gospel truth! (2.) They will thereby secure the promise of eternal life: And this is the promise that he (even God the Father, Jo1 5:11) hath promised us, even eternal life, Jo1 2:25. Great is the promise that God makes to his faithful adherents. It is suitable to his own greatness, power, and goodness. It is eternal life, which none but God can give. The blessed God puts great value upon his Son, and the truth relating to him, when he is pleased to promise to those who continue in that truth (under the light, and power, and influence of it) eternal life. Then the exhortation aforesaid is enforced,

2.From the design of the apostle's writing to them. This letter is to fortify them against the deceivers of the age: "These things have I written to you concerning those that seduce you (Jo1 2:26), and therefore, if you continue not in what you have heard from the beginning, my writing and service will be in vain." We should beware lest the apostolical letters, yea, lest the whole scripture of God, should be to us insignificant and fruitless. I have written to him the great things of my law (and my gospel too), but they were counted as a strange thing, Hos 8:12.

3.From the instructive blessing they had received from heaven: But the anointing which you have received from him abideth in you, Jo1 2:27. True Christians have an inward confirmation of the divine truth they have imbibed: the Holy Spirit has imprinted it on their minds and hearts. It is meet that the Lord Jesus should have a constant witness in the hearts of his disciples. The unction, the pouring out of the gifts of grace upon sincere disciples, is a seal to the truth and doctrine of Christ, since none giveth that seal but God. Now he who establisheth us with you (and you with us) in Christ, and hath anointed us, is God, Co2 1:21. This sacred chrism, or divine unction, is commended on these accounts: - (1.) It is durable and lasting; oil or unguent is not so soon dried up as water: it abideth in you, Jo1 2:27. Divine illumination, in order to confirmation, must be something continued or constant. Temptations, snares, and seductions, arise. The anointing must abide. (2.) It is better than human instruction: "And you need not that any man teach you, Jo1 2:27. Not that this anointing will teach you without the appointed ministry. It could, if God so pleased; but it will not, though it will teach you better than we can: And you need not that any man teach you, Jo1 2:27. You were instructed by us before you were anointed; but now our teaching is nothing in comparison to that. Who teacheth like him?" Job 36:22. The divine unction does not supersede ministerial teaching, but surmount it. (3.) It is a sure evidence of truth, and all that it teaches is infallible truth: But as the same anointing teacheth you of all things, and is truth, and is no lie, Jo1 2:27. The Holy Spirit must needs be the Spirit of truth, as he is called, Joh 14:17. The instruction and illumination that he affords must needs be in and of the truth. The Spirit of truth will not lie; and he teacheth all things, that is, all things in the present dispensation, all things necessary to our knowledge of God in Christ, and their glory in the gospel. And, (4.) It is of a conservative influence; it will preserve those in whom it abides against seducers and their seduction: "And even as it hath taught you you shall abide in him, Jo1 2:27. It teaches you to abide in Christ; and, as it teaches you, it secures you; it lays a restraint upon your minds and hearts, that you may not revolt from him. And he that hath anointed us is God, who also hath sealed us for himself, and given the earnest of the Spirit in our hearts." Co2 1:21, Co2 1:22.

Who is a liar but he that denieth that Jesus is the Christ? - Here we see some of the false doctrines which were then propagated in the world. There were certain persons who, while they acknowledged Jesus to be a Divine teacher, denied him to be the Christ, i.e. the Messiah.

He is antichrist, that denieth the Father and the Son, - He is antichrist who denies the supernatural and miraculous birth of Jesus Christ, who denies Jesus to be the Son of God, and who denies God to be the Father of the Lord Jesus; thus he denies the Father and the Son. The Jews in general, and the Gnostics in particular, denied the miraculous conception of Jesus; with both he was accounted no more than a common man, the son of Joseph and Mary. But the Gnostics held that a Divine person, Aeon, or angelical being, dwelt in him; but all things else relative to his miraculous generation and Divinity they rejected. These were antichrists, who denied Jesus to be the Christ.

Who is a liar, but he that denieth that Jesus is the Christ?.... Or that very Christ, and true Messiah, who was spoken of by all the prophets, since the beginning of the world, and so much, and so long desired by the Old Testament saints: he that denies that Jesus of Nazareth is the Messiah of the prophets, is not indeed the only liar in the world, but he is the greatest of liars; this is a consummate lie, being opposed to a glaring truth, to a fact clear an indisputable; and which rests not merely on the testimony of Jesus, who is truth itself, and who, in express words, more than once, declared and asserted himself to be the Christ; but all the characters of the Messiah, everything that is said of him in the Prophets, meet in Jesus, and the miracles which were done by him are flagrant proofs and undeniable evidences of his being the Christ of God; and all the apostles believed, and were sure that he was Christ, the Son of the living God: to which may be added the testimony of John, who was sent, and came to bear witness of him, and did; and who was a prophet, and a man of great probity and integrity. But there was a greater witness than he; even God himself, by a voice from heaven, bore a testimony to him; and angels, at his incarnation, declared him to be the Saviour, which is Christ the Lord; yea, the devil himself, who is a liar, and the father of ties in other things, knew and owned Jesus to be the Christ; so that those that deny him are the worst of liars, even worse than the devil himself. This may have regard not only to the Jews, that deny Jesus to be the Messiah, but chiefly to such who went by the name of Christians; who denied either his proper deity, or real humanity, as Ebion and Cerinthus, which was denying him to be the God-man, the Mediator, and Messiah; and is true of all such that deny him in any of his offices, or in things relating to them, as his Gospel, and any of the peculiar doctrines of it, delivered by him, and so deny his prophetic office; or any of his ordinances, institutions, and appointments, as lawgiver in his house, and King of saints, and so deny him in his kingly office; or reject him as the alone Saviour, joining their own works with him, in the business of salvation, and oppose his sacrifice and satisfaction, and despise his imputed righteousness, and so deny him in his priestly office. Now these are some of the liars, and these some of the doctrinal lies, which are not of the truth, as in 1Jo_2:21.

He is antichrist that denieth the Father and the Son: that denies the Father of Christ to be the Creator of the world, but asserts that it was made by angels, as some ancient heretics did; or that the Father of Christ is not the God of the Old Testament, as Marcion; or that denies that God is the Father of Christ, and that Christ is the Son of God; who will not allow that there is any such relation in nature between them; who affirm that Christ is only the Son of God by adoption, or because of his love to him, or because of his incarnation and resurrection from the dead; or that he is not his true and proper Son, only in a figurative and metaphorical sense; that he is not the natural and eternally begotten Son of God, only by office, and as Mediator, and that God is only his Father, as having installed him into an office; or he that denies that these two are distinct from each other, but affirms that Father is the Son, and the Son is the Father, and so confounds them both, and, by confounding both, denies that there are either Father or Son; and all such persons are antichrists, or opposers of Christ.

a liar--Greek, "Who is the liar?" namely, guilty of the lie just mentioned (Jo1 2:21).

that Jesus is the Christ--the grand central truth.

He is Antichrist--Greek, "the Antichrist"; not however here personal, but in the abstract; the ideal of Antichrist is "he that denieth the Father and the Son." To deny the latter is virtually to deny the former. Again, the truth as to the Son must be held in its integrity; to deny that Jesus is the Christ, or that He is the Son of God, or that He came in the flesh, invalidates the whole (Mat 11:27).