1 John 4:2

Hereby ye know the Spirit of God: Every spirit that acknowledgeth that Jesus Christ hath come in the flesh, is of God.

1 Corinthians 12:3

wherefore I give you to understand that no one speaking by the Spirit of God saith, Accursed be Jesus; and that no one can say, Jesus is Lord, but by the Holy Spirit.

John 1:14

And the Word became flesh, and dwelt among us, full of grace and truth; and we beheld his glory, a glory as of an only begotten of a father.

John 16:13-15

But when he, the Spirit of truth, is come, he will guide you into all the truth. For he will not speak from himself, but whatever he shall hear, that he will speak; and he will tell you the things to come.

1 Timothy 3:16

And confessedly great is the mystery of godliness, in him who was manifested in the flesh, justified in the Spirit, seen by angels, preached among the gentiles, believed on in the world, received up in glory.

1 John 2:23

Whoever denieth the Son, the same hath not the Father; he that acknowledgeth the Son hath also the Father.

1 John 4:3

And every spirit that doth not acknowledge Jesus, is not of God; and this is that spirit of Antichrist, of which ye have heard that it is to come, and even now it is already in the world.

1 John 5:1

Whoever believeth that Jesus is the Christ hath been born of God; and every one that loveth him that begat, loveth also him that hath been 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 doth not acknowledge Jesus, is not of God; and this is that spirit of Antichrist, of which ye have heard that it is to come, and even now it is already in the world.
John 1:14
And the Word became flesh, and dwelt among us, full of grace and truth; and we beheld his glory, a glory as of an only begotten of a father.
1 Timothy 3:16
And confessedly great is the mystery of godliness, in him who was manifested in the flesh, justified in the Spirit, seen by angels, preached among the gentiles, believed on in the world, received up in glory.

General references

John 8:47
He that is of God heareth Gods words; for this cause ye do not hear, because ye are not of God.