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 2:18

Little children, these are the end times, and as you heard that the antichrist is coming, even now many antichrists have arisen. By this we know that it is the final hour.

1 John 2:22

Who is the liar but he who denies that Jesus is the Christ? This is the antichrist, he who denies the Father and the Son.

2 John 1:7

For many deceivers have gone out into the world, those who do not confess that Jesus Christ came in the flesh. This is the deceiver and the antichrist.

2 Thessalonians 2:3-8

Let no one deceive you in any way. For it will not be, unless the departure comes first, and the man of lawlessness is revealed, the son of destruction,

Treasury of Scripture Knowledge

Summary

1 John 4:3

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

And this

1 John 2:18

2 Thessalonians 2:7

2 John 1:7

General references

Deuteronomy 18:21

John 8:47

Bible References

And this

Little children, these are the end times, and as you heard that the antichrist is coming, even now many antichrists have arisen. By this we know that it is the final hour.

For the mystery of lawlessness already works. Only there is one who restrains now, until he is taken out of the way.

For many deceivers have gone out into the world, those who do not confess that Jesus Christ came in the flesh. This is the deceiver and the antichrist.

General references

If you say in your heart, "How shall we know the word which the LORD has not spoken?"

He who is of God hears the words of God. For this cause you do not hear, because you are not of God."