2 John 1:7

For many deceivers went out into the world, who do not acknowledge Jesus Christ coming in the flesh; this is the deceiver and the antichrist.

1 John 4:1-3

Beloved, believe not every spirit, but try the spirits, whether they are of God; because many false prophets have gone forth into the world.

1 John 2:26

These things I have written to you concerning those who seduce you.

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.

2 Peter 2:1-3

But there arose false prophets also among the people, as there will be false teachers among you also, who will stealthily bring in destructive factions, even denying the Lord that bought them; bringing upon themselves swift destruction.

1 John 2:18-22

My children, the last time is come; and as ye have heard that Antichrist is coming, even now there are many antichrists; whereby we know that the last time is come.

Revelation 12:9

And the great dragon was cast down, the old serpent, called the Devil and Satan, who deceiveth the whole world; he was cast down to the earth, and his angels were cast down with him.

Revelation 13:14

And he deceiveth them that dwell on the earth, by reason of the signs which it was given him to do in the presence of the beast; commanding those who dwell on the earth to make an image to the beast which had the wound by a sword, and lived.

Treasury of Scripture Knowledge

Summary

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.

Bible References

Many

2 Peter 2:1
But there arose false prophets also among the people, as there will be false teachers among you also, who will stealthily bring in destructive factions, even denying the Lord that bought them; bringing upon themselves swift destruction.
1 John 2:18
My children, the last time is come; and as ye have heard that Antichrist is coming, even now there are many antichrists; whereby we know that the last time is come.
1 John 4:1
Beloved, believe not every spirit, but try the spirits, whether they are of God; because many false prophets have gone forth into the world.

Who

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.
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.
Revelation 12:9
And the great dragon was cast down, the old serpent, called the Devil and Satan, who deceiveth the whole world; he was cast down to the earth, and his angels were cast down with him.
Revelation 13:14
And he deceiveth them that dwell on the earth, by reason of the signs which it was given him to do in the presence of the beast; commanding those who dwell on the earth to make an image to the beast which had the wound by a sword, and lived.

This is

1 John 2:22
Who is the liar, but he that denieth that Jesus is the Christ? This is the antichrist, who denieth the Father and the Son.
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.