Matthew 24:27
For just like lightning that appears in the east can be seen even in the west, so it will be with the presence [i.e., coming] of the Son of man.
Matthew 24:31
And He will send out His angels [i.e., as messengers] with the sound of a great trumpet [See I Thess. 4:16] to gather His elect [i.e., God's people] from all directions, [even] from throughout the whole world. [Note: See Mark 13:27, which suggests this thought by its use of 'earth' and 'sky']
Mark 13:27
And He will send out His angels and gather His elect [i.e., God's people] from all directions, from the farthest part of the earth to the farthest part of the sky [i.e., from throughout the whole world].
Luke 17:24
For the Son of man [will come] in His day just like lightning which flashes from one part of the sky and lights up the other part.