Most scholars agree this event happened in Luke 21 was fulfilled in 70 ad.
The Temple was standing.......
Luke 21:
5 And certain saying about
the temple, that with goodly stones and devoted things it hath been adorned, he said,
20 'And when ye may see
Jerusalem surrounded by encampments, then know that come nigh did her desolation;
Here is John measuring the Sanctuary/Temple, so is that in place before or after the "rapture" and 2 witnesses and 2nd coming?.....
Revelation 11:
1 And there was given to me a reed like to a rod, and the messenger stood, saying, 'Rise! and measure!
the Sanctuary of God, and the altar, and those worshiping in it;
2 and the court that is without the Sanctuary cast out outside, and thou mayest not measure it,
because it was given to the nations, and
the holy City they shall tread down forty-two months;