MAT 24:30

30 After that, something [will be seen] {[people will observe something]} in the sky that indicates that [I], the one who came from heaven, [am returning to the earth]. Then [unbelieving people from] all ethnic groups of the earth will [mourn because they will be afraid] of [God punishing them]. They will see [me], the one who came from heaven, coming on the clouds with power and great glory [as I return to the earth].