Mark 13:24-27
24 But in those days, after this tribulation, the sun will be darkened, and the moon shall not give her light.
25 And the stars of heaven shall fall, and the powers that are in heaven shall be shaken.
26 And they shall see the Son of man coming in the clouds with great power and glory.
27 And then he shall send his angels, and shall gather together his elect from the four winds, from the uttermost part of the earth to the uttermost part of heaven.