Revelation 8:10-11 - The Third Trumpet
10 Then the third angel blew his trumpet, and there fell from the sky a great star blazing like a torch, and it fell upon one-third of the rivers and the springs of water. 11 The star is called Absinthus, that is, Wormwood. So one-third of the waters turned to wormwood, and great numbers of people died of the waters, because they had turned bitter.