Matthew 24:20-21

AUV(i) 20 And pray that it will not be in the winter or on a Sabbath day when you will have to flee [from the city]. [Note: Jewish Sabbath day restrictions on travel (only three-fifths of a mile) and city gate closures would make leaving the city nearly impossible]. 21 There will be great trouble [during these times], such as had never been from the beginning of time up to the present, or ever will be [in the days to come].