1 As Jesus left and was going out of the temple complex, His disciples came up and called His attention to the temple buildings.
2 Then He replied to them, "Don't you see all these things? I assure you: Not one stone will be left here on another that will not be thrown down!"
The destruction of the temple in Jerusalem is a fact of history. The Romans destroyed the temple in AD 70. But amazingly they did not finish the job. When Jesus predicted the destruction of the temple he said that not one stone would be left on another. Look at the Wailing Wall! All the stones have not yet been thrown down.
If these words of Jesus are true, then there is much more to come in Jerusalem! The destruction of the temple was not completed because there are obviously a number of stones that have not yet been thrown down.