There will be a 42 month period that the Antichrist (also called the beast) will ravage and destroy multitudes, especially the saints and Jews (Rev. 12:1-17; 13:7). It will be the bleakest and darkest period of human history and will extend over the entire globe! The Antichrist, the evil world dictator at the time, will have complete control over all financial transactions, even the simplest grocery purchases. His reign will suddenly end after 42 months and his fate is clear:
But the beast was captured, and with him the false prophet who had performed the miraculous signs on his behalf. With these signs he had deluded those who had received the mark of the beast and worshiped his image. The two of them were thrown alive into the fiery lake of burning sulfur. (Rev 19:20)
Sandwiched in between the details about the Antichrist is a highly important piece of data that should be carefully remembered. That detail is, the people who take the mark of the beast and worship his image were deceived by miraculous signs performed by the false prophet, who will be promoting the Antichrist! Hence, not all supernatural signs are from God.
One final point: If Rev. 19:20 is compared to Rev. 20:10, the Antichrist and false prophet are still conscious and in torment 1,000+ years after being thrown alive into the fiery lake of burning sulfur! That fact is destructive to the Jehovah’s Witness and Seventh Day Adventist doctrine of annihilation for the wicked dead. The wicked dead will be conscious forever, just like the righteous overcomers who enter God’s paradise kingdom. Furthermore, the doctrine of universal salvation for everyone is destroyed by these same Scriptures. Rev. 12:11 is also a vital Scripture to have memorized for that period.