1 John 4:3

New Revised Standard Version

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

Cross References

Matthew 24:5

For many will come in my name, saying, ‘I am the Messiah!’ and they will lead many astray.

1 John 2:18

Children, it is the last hour! As you have heard that antichrist is coming, so now many antichrists have come. From this we know that it is the last hour.

1 John 2:22

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

2 John 1:7

Many deceivers have gone out into the world, those who do not confess that Jesus Christ has come in the flesh; any such person is the deceiver and the antichrist!