In response to your 10/02 post DECEPTION, OH SO GREAT (fivedoves.com) I would agree with you that deception has been going on for some time now.
However, I think the greatest deception will take place when the Antichrist and False Prophet do great signs and lying wonders and people end up worshipping the beast and his image and receive the mark of the beast in the forehead or the right hand which will damn them eternally to the lake of fire.
2 Thess. 2:8-12, "And then shall that Wicked be revealed, whom the Lord shall consume with the spirit of his mouth, and shall destroy with the brightness of his coming: Even him, whose coming is after the working of Satan with all power and signs and lying wonders, And with all deceivableness of unrighteousness in them that perish; because they received not the love of the truth, that they might be saved. And for this cause God shall send them strong delusion, that they should believe a lie: That they all might be damned who believed not the truth, but had pleasure in unrighteousness."