The apostle, having said that God's dwelling in and with us may be known by the Spirit that he hath given us, intimates that that Spirit may be discerned and distinguished from other spirits that appear in the world; and so here,

I.He calls the disciples, to whom he writes, to caution and scrutiny about the spirits and spiritual professors that had now risen. 1. To caution: "Beloved, believe not every spirit; regard not, trust not, follow not, every pretender to the Spirit of God, or every professor of vision, or inspiration, or revelation from God." Truth is the foundation of simulation and counterfeits; there had been real communications from the divine Spirit, and therefore others pretended thereto. God will take the way of his own wisdom and goodness, though it may be liable to abuse; he has sent inspired teachers to the world, and given us a supernatural revelation, though others may be so evil and so impudent as to pretend the same; every pretender to the divine Spirit, or to inspiration, and extraordinary illumination thereby, is not to be believed. Time was when the spiritual man (the man of the Spirit, who made a great noise about, and boast of, the Spirit) was mad, Hos 9:7. 2. To scrutiny, to examination of the claims that are laid to the Spirit: But try the spirits, whether they be of God, Jo1 4:1. God has given of his Spirit in these latter ages of the world, but not to all who profess to come furnished therewith; to the disciples is allowed a judgment of discretion, in reference to the spirits that would be believed and trusted in the affairs of religion. A reason is given for this trial: Because many false prophets have gone out into the world, Jo1 4:1. There being much about the time of our Saviour's appearance in the world a general expectation among the Jews of a Redeemer to Israel, and the humiliation, spiritual reformation, and sufferings of the Saviour being taken as a prejudice against him, others were induced to set up as prophets and messiahs to Israel, according to the Saviour's prediction, Mat 24:23, Mat 24:24. It should not seem strange to us that false teachers set themselves up in the church: it was so in the apostles' times; fatal is the spirit of delusion, sad that men should vaunt themselves for prophets and inspired preachers that are by no means so!

II.He gives a test whereby the disciples may try these pretending spirits. These spirits set up for prophets, doctors, or dictators in religion, and so they were to be tried by their doctrine; and the test whereby in that day, or in that part of the world where the apostle now resided (for in various seasons, and in various churches, tests were different), must be this: Hereby know you the Spirit of God, Every spirit that confesseth that Jesus Christ has come in the flesh (or that confesseth Jesus Christ that came in the flesh), is of God, Jo1 4:2. Jesus Christ is to be confessed as the Son of God, the eternal life and Word, that was with the Father from the beginning; as the Son of God that came into, and came in, our human mortal nature, and therein suffered and died at Jerusalem. He who confesses and preaches this, by a mind supernaturally instructed and enlightened therein, does it by the Spirit of God, or God is the author of that illumination. On the contrary, "Every spirit that confesseth not that Jesus Christ has come in the flesh (or Jesus Christ that came in the flesh) is not of God, Jo1 4:3. God has given so much testimony to Jesus Christ, who was lately here in the world, and in the flesh (or in a fleshly body like ours), though now in heaven, that you may be assured that any impulse or pretended inspiration that contradicts this is far from being from heaven and of God." The sum of revealed religion is comprehended in the doctrine concerning Christ, his person and office. We see then the aggravation of a systematic opposition to him and it. And this is that spirit of antichrist whereof you have heard that it should come, and even now already is it in the world, Jo1 4:3. It was foreknown by God that antichrists would arise, and antichristian spirits oppose his Spirit and his truth; it was foreknown also that one eminent antichrist would arise, and make a long and fatal war against the Christ of God, and his institution, and honour, and kingdom in the world. This great antichrist would have his way prepared, and his rise facilitated, by other less antichrists, and the spirit of error working and disposing men's minds for him: the antichristian spirit began betimes, even in the apostles' days. Dreadful and unsearchable is the judgment of God, that persons should be given over to an antichristian spirit, and to such darkness and delusion as to set themselves against the Son of God and all the testimony that the Father hath given to the Son! But we have been forewarned that such opposition would arise; we should therefore cease to be offended, and the more we see the word of Christ fulfilled the more confirmed we should be in the truth of it.

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 Co1 12:1-12; Ti1 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.

Beloved, believe not every spirit,.... The apostle having mentioned the word "spirit" in the latter part of the preceding chapter, takes an occasion from thence to return to what he had been suggesting in the "second" chapter, concerning the many antichrists that then were, and whom he points out, and here cautions against. By "every spirit" he means, either every doctrine that is pretended to come from the Spirit of God, or every teacher, who professes to be qualified and sent by him, and to have his light, knowledge, and doctrine from him. Every true minister of the Gospel has the Spirit, and the gifts of the Spirit, more or less, to qualify him for his work; he is separated, and called to it by him, and receives his spiritual light find knowledge from him; it is he that teaches him sound doctrine, and leads him into all truth, as it is in Jesus, and brings every necessary truth to his remembrance; and who succeeds his ministrations to the good of souls: but there are some who call themselves the ministers of the Gospel, who, though they may have some natural abilities, and a share of human learning, and a notional knowledge of things, yet have never received either grace or gifts from the Spirit; nor have they been ever called by him; nor are their ministrations according to that divine word which is inspired by him, nor attended with his demonstration and power; wherefore, though some professing to have the Spirit of Christ are to be believed, yet not everyone; and though the Spirit is not to be quenched in any, nor prophesying to be despised, yet care should be taken what is heard and received: some persons are so obstinate and incredulous as not to believe anything that is declared, be the evidence what it will; as the Jews would not believe Christ and his apostles, though what they said agreed with Moses and the prophets, and was confirmed by miracles; and others are too credulous; at once receive every teacher, and embrace every upstart doctrine: this they should not do,

but try the spirits whether they are of God; not by human reason, especially as carnal and unsanctified; for though the doctrines of the Gospel are not contrary to true reason, they are above it, and not to be judged of by it, and are disapproved of and rejected by carnal reason; but by the word of God, which is the standard of all doctrine; and whatever agrees with that is to be received, and what does not should be rejected. And so to do is very commendable, as appears from the instance of the Beraeans, who on this account are said to be more noble than those of Thessalonica, Act 17:11; and from the commendation of the church at Ephesus, Rev 2:2. And this is what every believer, every private Christian should do; to them it belongs to read and search the Scriptures, and prove all things, and judge for themselves of the truth of doctrine; and to such a probation or trial of the spirits, spiritual light, knowledge, judgment, sense, experience, and divine guidance are necessary, which should be asked of God, and an increase thereof; and all such diligent searchers, and humble inquirers, are capable of making judgment of persons and doctrines, whether they are from the Spirit of God or not, for the Spirit of God never speaks contrary to his word: and the reason why such a trial should be made is,

because many false prophets are gone out into the world: such who pretended either to a revelation of future things, and to foretell things to come; or rather to a gift of prophesying, or preaching in Christ's name, to be "prophets" and spiritual men, and ministers of the word, but were "false" ones; who either predicted what did not come to pass, or rather preached false doctrine, by corrupting the word, and handling it deceitfully, and so imposed upon and ruined the souls of others, as well as deceived their own: and there were not only one, or two, or a few of these, but "many", as our Lord had foretold, Mat 24:11; and which makes the reason the stronger for not believing every spirit, but trying them; and the rather, since they were not sent of God, hot called out by his churches, but were "gone out" of themselves; of their own heads, and without any mission from God or man: and "into the world" too; they were in every part of it, and especially where there were any churches of Christ; into which they first crept in privily, and at unawares, but afterwards became public preachers of the word, and then separating from them, set up openly in the world for themselves.