An ordinary man possessed by SATAN?

So, then SATAN would be the anti-christ and not the ordinary man.

Do we not use the name SATAN to describe those who act in "evil" ways?

Could it be for a lack of better explanation?

Or, does the anti-christ truly exist?

Is it inconceivable for us to believe that men can be evil without being possessed by demons and/or Satan?

If so, would this then not question our faith in God?