16 Here δέ (de) has been translated as “so” to indicate the implied result of Jesus’ comments about the temple’s future destruction.
17 Grk “asked him, saying.” The participle λέγοντες (legontes) is redundant in English and has not been translated.
18 Both references to these things are plural, so more than the temple’s destruction is in view. The question may presuppose that such a catastrophe signals the end.
19 Grk “when.”

In other versions

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 these things happen? And what will be the sign that they are about to take place?”

“Teacher,” they asked him, “so when will these things happen? 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?”

And they asked him, saying, “Teacher, when therefore will these things happen, and what will be the sign when these things are about to take place?”

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?

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