1Jo 4:2 Hereby know ye the Spirit of God: Every spirit that confesseth that Jesus Christ is come in the flesh is of God:
1Jo 4:3 And every spirit that confesseth not that Jesus Christ is come in the flesh is not of God: and this is that [spirit] of antichrist, whereof ye have heard that it should come; and even now already is it in the world.
2Jo 1:7 For many deceivers are entered into the world, who confess not that Jesus Christ is come in the flesh. This is a deceiver and an antichrist.
This is a present happening, The tense is, "Is Come" in the flesh, not has come.
This is the presence of Jesus Christ in our flesh, which has been quickened to contain the Spirit of Christ in you the Hope of Glory.
Eph 2:1 And you [hath he quickened], who were dead in trespasses and sins;
Eph 2:5 Even when we were dead in sins, hath quickened us together with Christ, (by grace ye are saved;)
Col 2:13 And you, being dead in your sins and the uncircumcision of your flesh, hath he quickened together with him, having forgiven you all trespasses;
1Pe 3:18 For Christ also hath once suffered for sins, the just for the unjust, that he might bring us to God, being put to death in the flesh, but quickened by the Spirit:
This mortal body is where Christ "is come".
Rom 8:11 But if the Spirit of him that raised up Jesus from the dead dwell in you, he that raised up Christ from the dead shall also quicken your mortal bodies by his Spirit that dwelleth in you.
Because without His Spirit in us we are none of His.
Rom 8:9 But ye are not in the flesh, but in the Spirit, if so be that the Spirit of God dwell in you. Now if any man have not the Spirit of Christ, he is none of his.
This making the Spirit of Christ our new creature life and the Holy Spirit our teacher of that life.
1 Peter 1:11-12 Searching what, or what manner of time the ((((Spirit of Christ which was in them did signify,)))) when it testified beforehand the sufferings of Christ, and the glory that should follow. Unto whom it was revealed, that not unto themselves, but unto us they did minister the things, which are now reported unto you ((((by them that have preached the gospel unto you with the Holy Ghost sent down from heaven;)))) which things the angels desire to look into.
The Spirit of Christ, Life. The Holy Spirit, knowledge and the power of that knowledge, which is The Life of "Christ in you the Hope of Glory".
Paul was chargeable to no men and took nothing for the Gospel, God provided by those He moved to support Paul.
2 Corinthians 11:9-15 And when I was present with you, and wanted, I was chargeable to no man: for that which was lacking to me the brethren which came from Macedonia supplied: and in all things I have kept myself from being burdensome unto you, and so will I keep myself. As the truth of Christ is in me, no man shall stop me of this boasting in the regions of Achaia. Wherefore? because I love you not? God knoweth. But what I do, that I will do, that I may cut off occasion from them which desire occasion; that wherein they glory, they may be found even as we. For such are false apostles, deceitful workers, transforming themselves into the apostles of Christ. And no marvel; for Satan himself is transformed into an angel of light. Therefore it is no great thing if his ministers also be transformed as the ministers of righteousness; whose end shall be according to their works.
As Everett has said, test all spirits.
In Christ: Phillip