Mark 13:4
Tell us, when will these things happen? And what will be the sign that they are all about to be fulfilled? — the disciples' two-part question conflates two distinct events that Jesus will partially separate in the discourse: when will the temple be destroyed, and what will be the sign of all these things being fulfilled? The conflation produces the interpretive challenge of the discourse: distinguishing which parts refer to the 70 CE destruction and which to the final consummation.