Comment on HeadStrongBoy's post
What you say is true; Satan is certainly anti-Christ, and his spirit has been here all along. However, the Satanic conspiracy will culminate in two mortal men.
Rev. 19:20 And the beast was taken, and with him the false prophet that wrought miracles before him with which he deceived them that had received the mark of the beast, and them that worshipped his image. These both were cast alive into a lake of fire burning with brimstone.
Satan will not be sent to the Lake of Fire until after the Millennium, and this verse is plainly talking about mortal men. Only men and angels can be put into the Lake of Fire; not an office or spirit.
Hope this helps.