The Fourth Trump
The Smitten Trump
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 as the third part of them was darkened, and the day shone not for a third part of it, and the night likewise.
13 And I beheld, and heard an angel flying through the midst of heaven, saying with a loud voice, Woe, woe, woe, to the inhibiters of the earth by reason of the other voices of the trumpet of the three angels, which are yet to sound!
The first three trumps are preparing the people for the coming of antichrist.