Destruction is that coming we read about in Matt 24:
Matthew 24:38-39 KJV For as in the days that were before the flood
they were eating and drinking, marrying and giving in marriage, until the day that Noe entered into the ark, (39) And knew not until
the flood came, and took them all away; so shall also the coming of the Son of man be.
Matthew 24:43 KJV But know this, that if the goodman of the house had known in what watch the
thief would come, he would have watched, and would not have suffered
his house to be broken up.
Matthew 24:50-51 KJV The
lord of that servant shall come......And shall
cut him asunder, and appoint him his portion with the hypocrites: there shall be weeping and gnashing of teeth.
THE COMING WAS ONLY IN DESTRUCTION.
The disciples KNEW THAT because of what they heard in Matt 23 about the temple destruction. So when they heard Jesus speak of the temple destruction they immediately connected it WITH HIS COMING.
Matthew 24:2-3 KJV And Jesus said unto them, See ye not all these things? verily I say unto you,
There shall not be left here one stone upon another, that shall not be thrown down. (3) And as he sat upon the mount of Olives, the disciples came unto him privately, saying, Tell us, when shall these things be? and
what shall be the sign of thy coming, and of the end of the world?
The ONLY COMING they ever heard Him talk about in Matthew before this chapter was DESTRUCTION.
Matthew 21:40-41 KJV When the lord therefore of the vineyard
cometh, what will he do unto those husbandmen? (41) They say unto him,
He will miserably destroy those wicked men, and will let out his vineyard unto other husbandmen, which shall render him the fruits in their seasons.