Before the end of this present world, even though most miss it, the entire world will turn to the worship of Satan, and his special man, who also called “the beast” and “the man of lawlessness” and “the corpse” and “the abomination of desolation.” IT WILL BAD TIMES FOR THE ENTIRE WORLD, with the surviving Christians who will not worship the beast being protected in “the wilderness.”
But then Jesus will finally come to rescue His own, and bring Judgment on the universe.
So there is also joy among the Christians because they know their deliverance is near.
My book Jewish Chronicles, is about things well before the end of this world.
Both Prophecy Principles and Revealing the Christian Age give more details on the end of this present universe, and the beginnings of the New Heavens and the New Earth. All are available from your bookseller.