1 John 4:3

But every spirit who does not confess Jesus is not from God. This is the spirit of the antichrist; you have heard that he is coming, and he is already in the world now.

1 John 2:18

Children, it is the last hour. And as you have heard, “Antichrist is coming,” even now many antichrists have come. We know from this that it is the last hour.

1 John 2:22

Who is the liar, if not the one who denies that Jesus is the Messiah? This one is the antichrist: the one who denies the Father and the Son.

2 John 1:7

Many deceivers have gone out into the world; they do not confess the coming of Jesus Christ in the flesh. This is the deceiver and the antichrist.

2 Thessalonians 2:3-8

Don’t let anyone deceive you in any way. For that day will not come unless the apostasy 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

Children, it is the last hour. And as you have heard, “Antichrist is coming,” even now many antichrists have come. We know from this that it is the last hour.

For the mystery of lawlessness is already at work, but the one now restraining will do so until he is out of the way,

Many deceivers have gone out into the world; they do not confess the coming of Jesus Christ in the flesh.

This is the deceiver and the antichrist.

General references

You may say to yourself, ‘How can we recognize a message the Lord has not spoken?’

The one who is from God listens to God’s words. This is why you don’t listen, because you are not from God.”