1 John 4:2

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

1 Corinthians 12:3

Wherefore I declare unto you that no man speaking in the spirit of God defieth Jesus. Also no man can say that Jesus is the Lord, but by the holy ghost.

John 1:14

And the word was made flesh, and dwelt among us, and we saw the glory of it, as the glory of the only begotten son of the father, which word was full of grace, and verity.

John 16:13-15

Howbeit, when he is once come - I mean the spirit of truth - he will lead you into all truth. 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 nay, great is that mystery of godliness. God was showed in the flesh, was justified in the spirit, was seen of angels, was preached unto the gentiles, was believed on in earth and received up in glory.

1 John 2:23

Whosoever denieth the son, the same hath not the father.

1 John 4:3

And every spirit that confesseth not that Jesus Christ is come in the flesh, is not of God. And the same is that spirit of antichrist, of whom ye have heard, how that he should come: and even now already is he in the world.

1 John 5:1

All that believe that Jesus is Christ, are born of God. And all that loveth him which begat, loveth him also which was 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 confesseth not that Jesus Christ is come in the flesh, is not of God. And the same is that spirit of antichrist, of whom ye have heard, how that he should come: and even now already is he in the world.
John 1:14
And the word was made flesh, and dwelt among us, and we saw the glory of it, as the glory of the only begotten son of the father, which word was full of grace, and verity.
1 Timothy 3:16
And without nay, great is that mystery of godliness. God was showed in the flesh, was justified in the spirit, was seen of angels, was preached unto the gentiles, was believed on in earth and received up in glory.

General references

Deuteronomy 18:21
And if thou say in thine heart, 'How shall I know that which the LORD hath not spoken?'
John 8:47
He that is of God, heareth God's words. Ye therefore hear them not, because ye are not of God."