When the Antichrist shows up during the time of Jacob’s trouble, he will fool people into thinking that he is actually the Messiah, Jesus Christ. Antichrist has the title of Messiah, ‘Christos’, built right in his name, he is just a false messiah. But this is exactly who is being sung about in the Exsultet prayer at the Vatican, it has nothing to do with the real Messiah, Jesus.
God has given Satan every advantage, every angle and allowed him to use every trick in the book so that when the Devil is defeated at the Battle of Armageddon, his fall will be without precedence. It will be the greatest defeat in human history, watched by the entire world, as the Devil and his army get crushed like grapes in a winepress.