Revelation 8:10-11 - The Third Trumpet
10 [When] the third angel sounded its trumpet [I saw] a huge star, like a flaming torch, falling from heaven. It fell on one third of the rivers and on the springs of water. 11 And the star was called "Wormwood" [Note: The Greek word here means "bitter," See Lam. 3:15 ASV], and one third of the waters became wormwood [i.e., bitter], and many people died from the waters because they had become bitter.