Matthew 24:2-3

And Jesus turned to them and said, “Take a good look at all these things, for I’m telling you, there will not be one stone left upon another. It will all be leveled!” Later, when they arrived at the Mount of Olives, his disciples came privately to where he was sitting and said, “Tell us, when will these things happen? And what sign should we expect to signal your coming and the completion of this age?”