2 John 7-8
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. Look to yourselves, that we lose not those things which we have wrought, but that we receive a full reward.
There are many who do not believe that Jesus came to this earth in the flesh. If they don’t, they are classified as an antichrist. We are to understand and know the truth that Jesus Christ was, is, and always will be God.