1 John 4:2

By this you know the Spirit of God: every spirit who confesses that Jesus Christ has come in the flesh is of God,

1 Corinthians 12:3

Therefore I make known to you that no man speaking by God's Spirit says, "Jesus is accursed." No one can say, "Jesus is Lord," but by the Holy Spirit.

John 1:14

The Word became flesh and lived among us, and we saw his glory, such glory as of the one and only of the Father, full of grace and truth.

John 16:13-15

However when he, the Spirit of truth, has come, he will guide you into all truth, for he will not speak on his own; but whatever he hears he will speak, and he will declare to you things that are coming.

1 Timothy 3:16

Without controversy, the mystery of godliness is great: He was revealed in the flesh, justified by the Spirit, seen by angels, preached among the nations, believed on in the world, and received up in glory.

1 John 2:23

Whoever denies the Son, the same does not have the Father. He who confesses the Son has the Father also.

1 John 4:3

and every spirit who does not confess Jesus is not of God; and this is that of the antichrist, of whom you have heard that it comes. Now it is in the world already.

1 John 5:1

Whoever believes that Jesus is the Christ is born of God. Whoever loves the Father also loves the child who is born 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 who does not confess Jesus is not of God; and this is that of the antichrist, of whom you have heard that it comes. Now it is in the world already.
John 1:14
The Word became flesh and lived among us, and we saw his glory, such glory as of the one and only of the Father, full of grace and truth.
1 Timothy 3:16
Without controversy, the mystery of godliness is great: He was revealed in the flesh, justified by the Spirit, seen by angels, preached among the nations, believed on in the world, and received up in glory.

General references

Deuteronomy 18:21
If you say in your heart, "How shall we know the word which the LORD has not spoken?"
John 8:47
He who is of God hears the words of God. For this cause you do not hear, because you are not of God."