1 John 4:3

and every spirit which does not confess Jesus is not of God: and this is the spirit of antichrist, which you have heard that he is coming; and now he is already in the world.

1 John 2:18

Little children, it is the last hour: and as you have heard that antichrist is coming, even now many antichrists have come, from which we know that it is the last hour.

1 John 2:22

Who is a liar except the one denying that Jesus is the Christ? This one is the antichrist, the one denying the Father and the Son.

2 John 1:7

Because many deceivers have gone out into the world, who do not confess that Jesus Christ is coming in the flesh; the same is the deceiver and the antichrist.

2 Thessalonians 2:3-8

Let no one deceive you in any way: because unless there may first be an apostasy and the man of lawlessness may be revealed, the son of perdition,

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

John 8:47

Bible References

And this

Little children, it is the last hour: and as you have heard that antichrist is coming, even now many antichrists have come, from which we know that it is the last hour.

For already the mystery of lawlessness is working: only there is one now hindering, until he may be taken out of the midst;

Because many deceivers have gone out into the world, who do not confess that Jesus Christ is coming in the flesh; the same is the deceiver and the antichrist.

General references

The one being of God hears the words of God: on account of this you do not hear, because you are not of God.