Most know or have heard the term… Anti-Messiah (Anti-Christ).
the adversary of the Messiah
one who denies or opposes Christ; specifically : a great antagonist expected to fill the world with wickedness but to be conquered forever by Christ at his second coming. A false Christ
“those who deny the Messiah, are Anti-Messiah, just as Webster says“.
But what does Scripture actually say an Anti-Messiah is?
Who is a liar but he that denieth that YHWH is the Messiah?
He is antimessiah, that denieth the Father and the Son.
And every spirit that confesseth not
that YHWH the Messiah is come in the flesh is not of YHWH:
and this is that spirit of antimessiah,
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 YHWH the Messiah is come in the flesh.
This is a deceiver and an antimessiah.