1 John 4:2

By this you know the Spirit of God: Every spirit that confesses that Jesus Christ is come in the flesh is of God:

1 Corinthians 12:3

Therefore I give you to understand, that no man speaking by the Spirit of God calls Jesus accursed: and that no man can say that Jesus is the Lord, but by the Holy Spirit.

John 1:14

And the Word was made flesh, and dwelt among us, (and we beheld his glory, the glory as of the only begotten of the Father,) full of grace and truth.

John 16:13-15

But when he, the Spirit of truth, is come, he will guide you into all truth: for he shall not speak of himself; but whatsoever he shall hear, that shall he speak: and he will show you things to come.

1 Timothy 3:16

And without doubt great is the mystery of godliness: God was manifest in the flesh, justified in the Spirit, seen of angels, preached unto the Gentiles, believed on in the world, received up into glory.

1 John 2:23

Whosoever denies the Son, the same has not the Father: [but] he that confesses the Son has the Father also.

1 John 4:3

And every spirit that confesses not that Jesus Christ is come in the flesh is not of God: and this is that spirit of antichrist, of which you have heard that it should come; and even now already is it in the world.

1 John 5:1

Whosoever believes that Jesus is the Christ is born of God: and everyone that loves him that begat loves him also that is begotten of him.

Treasury of Scripture Knowledge

Summary

Hereby know ye the Spirit of God: Every spirit that confesseth that Jesus Christ is come in the flesh is of God:

General references

Bible References

Come

1 John 4:3
And every spirit that confesses not that Jesus Christ is come in the flesh is not of God: and this is that spirit of antichrist, of which you have heard that it should come; and even now already is it in the world.
John 1:14
And the Word was made flesh, and dwelt among us, (and we beheld his glory, the glory as of the only begotten of the Father,) full of grace and truth.
1 Timothy 3:16
And without doubt great is the mystery of godliness: God was manifest in the flesh, justified in the Spirit, seen of angels, preached unto the Gentiles, believed on in the world, received up into glory.

General references

Deuteronomy 18:21
And if you say in your heart, How shall we know the word which the LORD has not spoken?
John 8:47
He that is of God hears God's words: you therefore hear them not, because you are not of God.