Revelation 8:12-13 - The Fourth Trumpet
12 And the fourth angel sounded, and the third part of the sun was smitten, and the third part of the moon, and the third part of the stars; so that the third part of them was darkened, and the day shone not for the third part thereof,
13 and the night likewise, And I saw and heard an angel flying in the midst of heaven, saying with a loud voice, Wo, wo, wo to the inhabitants of the earth, by reason of the other voices of the trumpets of the three angels who are yet to sound.