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.”
But ye have an unction from the Holy One, and ye know all things.
I have not written unto you because ye know not the truth, but because ye know it, and that no lie is of the truth.
Who is a liar but he that denieth that Jesus is the Christ? He is antichrist, that denieth the Father and the Son.
Whosoever denieth the Son, the same hath not the Father: [but] he that acknowledgeth the Son hath the Father also.
Let that therefore abide in you, which ye have heard from the beginning. If that which ye have heard from the beginning shall remain in you, ye also shall continue in the Son, and in the Father.
Why This Verse Was Tagged
This verse contains specific terms directly associated with this theme.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“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.”
“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.”
“Little children, it is the last time: and as ye have heard that antichrist shall come, even now are there many antichrists; whereby we know that it is the last time.”
“I know thy works: behold, I have set before thee an open door, and no man can shut it: for thou hast a little strength, and hast kept my word, and hast not denied my name.”
“For there are certain men crept in unawares, who were before of old ordained to this condemnation, ungodly men, turning the grace of our God into lasciviousness, and denying the only Lord God, and our Lord Jesus Christ.”