Mark 13:14, 19-20

“You will see ‘a blasphemous object that brings destruction’ standing where it should not be.” (You who read this should understand what it means.) “At that time, the people in Judea should run away to the mountains.

because those days will be full of trouble. There will be more trouble than there has ever been since the beginning, when God made the world, until now, and nothing as bad will ever happen again. God has decided to make that terrible time short. Otherwise, no one would go on living. But God will make that time short to help the people he has chosen.