1 John 4:3
And every spirit that confesseth not that Jesus Christ is come in the flesh, is not from God. And this is that spirit of antichrist, of which ye have heard that it should come; and even now already it is in the world.
1 John 2:18
Little children, it is the last time: and as ye have heard that antichrist cometh, even now are there many antichrists; by which 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 have entered into the world, who confess not that Jesus Christ is come in the flesh. This is a deceiver, and an antichrist.
2 Thessalonians 2:3-8
Let no man deceive you by any means: for that day shall not come, except there come a falling away first, and that man of sin be revealed, the son of perdition;