Revelation 8:10-11 - The Third Trumpet
10 And the third angel sounded the trumpet, and a great star fell from heaven, burning as a torch, and it fell upon a third of the rivers, and upon the fountains of waters; 11 And the name of the star is called Wormwood: and the third of the waters is into wormwood; and many of men died of the waters, for they were rendered bitter.