1 John 2:18

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.

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

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.

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

For there shall arise false Christs, and false prophets, and shall shew great signs and wonders; insomuch that, if it were possible, they shall deceive the very elect.

Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets are gone out into the world.

How that they told you there should be mockers in the last time, who should walk after their own ungodly lusts.

Knowing this first, that there shall come in the last days scoffers, walking after their own lusts,

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

For the time will come when they will not endure sound doctrine; but after their own lusts shall they heap to themselves teachers, having itching ears; And they shall turn away their ears from the truth, and shall be turned unto fables.

For I know this, that after my departing shall grievous wolves enter in among you, not sparing the flock. Also of your own selves shall men arise, speaking perverse things, to draw away disciples after them.

And many false prophets shall rise, and shall deceive many.