and every spirit that does not confess Jesus is not from God. This is the spirit of the antichrist, which you have heard is coming and which is already in the world at this time.

Matthew 24:5
For many will come in My name, claiming, 'I am the Christ,' and will deceive many.

2 Thessalonians 2:3
Let no one deceive you in any way, for it will not come until the rebellion occurs and the man of lawlessness--the son of destruction--is revealed.

1 John 2:18
Children, it is the last hour; and just as you have heard that the antichrist is coming, so now many antichrists have appeared. This is how we know it is the last hour.

1 John 2:22
Who is the liar, if it is not the one who denies that Jesus is the Christ? This is the antichrist, who denies the Father and the Son.

2 John 1:7
For many deceivers have gone out into the world, refusing to confess the coming of Jesus Christ in the flesh. Any such person is the deceiver and the antichrist.

And every spirit that confesses not that Jesus Christ is come in the flesh is not of God: and this is that spirit of antichrist, whereof you have heard that it should come; and even now already is it in the world.