1 John 4:3

American Standard Version 2015

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

Cross References

1 John 2:22

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

2 John 1:7

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

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.

Matthew 24:5

For many shall come in my name, saying, I am the Christ; and shall lead many astray.