1 John 4:3
And every spirit that doth not acknowledge Jesus, is not of God; and this is that spirit of Antichrist, of which ye have heard that it is to come, and even now it is already in the world.
1 John 2:18
My children, the last time is come; and as ye have heard that Antichrist is coming, even now there are many antichrists; whereby we know that the last time is come.
1 John 2:22
Who is the liar, but he that denieth that Jesus is the Christ? This is the antichrist, who denieth the Father and the Son.
2 John 1:7
For many deceivers went out into the world, who do not acknowledge Jesus Christ coming in the flesh; this is the deceiver and the antichrist.
2 Thessalonians 2:3-8
Let no one deceive you in any manner; for [that day will not come] unless the apostasy shall have come first and the man of sin have been revealed, the son of perdition;