As Jesus sat on the Mount of Olives, the disciples came to him in private, and asked, “Please tell us when this will happen. What will be the sign of your coming and the end of the world?”
But when you see the ‘idolatry that causes devastation’ standing where it shouldn't be (let the reader understand), then those who are in Judea should run to the mountains.
“Make sure you're not deceived,” Jesus warned them. “Many people will come claiming to be me, saying, ‘Here I am!’ and, ‘The time has come!’ but don't follow them.