1 John 4:3
and every spirit that does not confess Jesus Christ has come in flesh is not of God. And this is that of the antichrist, which ye have heard that it comes, and is now in the world already.
1 John 2:18
Children, it is the last hour. And as ye heard that the antichrist comes, and now many antichrists have developed, from which we know that it is the last hour.
1 John 2:22
Who is the liar if not he who denies that Jesus is the Christ? This is the antichrist, he who denies the Father and the Son.
2 John 1:7
Because many deceivers have gone forth into the world, those not acknowledging Jesus Christ coming in flesh. This is the deceiver and the antichrist.
2 Thessalonians 2:3-8
Let not any man deceive you in any way, because if not, the defection may come first, and he may be revealed--the man of sin, the son of destruction,