Verse 16. Then let them, etc. Then Christians may know that the end is come, and should seek a place of safety. Destruction would not only visit the city, but would extend to the surrounding part of Judea.

The mountains. The mountains of Palestine abound in caves, a safe retreat for those pursued. In all ages these caves were the favourite places of robbers; and were also resorted to by those in danger, 1 Sa 13:6; 22:1; 2 Sa 23:13; Jos 10:16.

In those mountains they would be safe.