1 John 4:3

and every spirit that confesseth not Jesus is not of God: and this is the'spirit of the antichrist, whereof ye have heard that it cometh; and now it is in the world already.

1 John 2:18

Little children, it is the last hour: and as ye heard that antichrist cometh, even now have there arisen many antichrists; whereby we know that it is the last hour.

1 John 2:22

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

2 John 1:7

For many deceivers are gone forth into the world, even they that confess not that Jesus Christ cometh in the flesh. This is the deceiver and the antichrist.

2 Thessalonians 2:3-8

let no man beguile you in any wise: for it will not be, except the falling away come first, and the man of sin 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

Deuteronomy 18:21

John 8:47

Bible References

And this

Little children, it is the last hour: and as ye heard that antichrist cometh, even now have there arisen many antichrists; whereby we know that it is the last hour.

For the mystery of lawlessness doth already work: only there is one that restraineth now, until he be taken out of the way.

For many deceivers are gone forth into the world, even they that confess not that Jesus Christ cometh in the flesh. This is the deceiver and the antichrist.

General references

And if thou say in thy heart, How shall we know the word which Jehovah hath not spoken?

He that is of God heareth the words of God: for this cause ye hear them not, because ye are not of God.