Read Luke 21:7 Using Other Translations
And they asked him, saying, Master, but when shall these things be? and what sign will there be when these things shall come to pass?
And they asked him, "Teacher, when will these things be, and what will be the sign when these things are about to take place?"
“Teacher,” they asked, “when will all this happen? What sign will show us that these things are about to take place?”