1 John 4:3

King James Version (Oxford) 1769

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.

Cross References

Matthew 24:5

For many shall come in my name, saying, I am Christ; and shall deceive many.

1 John 2:18

Little children, it is the last time: and as ye have heard that antichrist shall come, even now are there many antichrists; whereby we know that it is the last time.

1 John 2:22

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

2 John 1:7

For many deceivers are entered into the world, who confess not that Jesus Christ is come in the flesh. This is a deceiver and an antichrist.