Mark 13:26
At that time they will see the Son of Man coming in the clouds with great power and glory.
What it says
They will see the Son of Man coming in the clouds with great power and glory.
What it is doing
It names the visible appearing of the Son of Man.
In context
24But in those days, after that tribulation: 25the stars will fall from the sky, 26At that time they will see the Son of Man coming in the clouds with great power and glory. 27And He will send out the angels to gather His elect from the four winds, from the ends of the earth to the ends of heaven.