Lk 21, 5-19
When some were talking about the Temple, remarking how it was adorned with fine stonework and votive offerings, he said, All these things you are staring at now — the time will come when not a single stone will be left on another; everything will be destroyed.’And they put to him this question, ‘Master,’ they said, ‘when will this happen, then, and what sign will there be that it is about to take place?’