The great delusion has started already in my opinion. I still believe that the lie that those left behind will believe to explain the rapture , will be that aliens removed those who were holding back progress for humanity because of their backward beliefs and biases. The anti christ will claim to get his wisdom and powers from these aliens. Just my thoughts. Since Islam will not be affected by the rapture, it will have a big voice in the one world religion and government, thus the method of execution for the tribulation saints is said to be beheading.