Revelation 8:10-11 - The Third Trumpet
10 And the third agent sounded, and a great star fell from the heaven burning like a torch, and it fell upon the third part of the rivers, and upon the springs of the waters. 11 And the name of the star is called Wormwood oil. And the third part of the waters developed into wormwood oil, and many of the men died from the waters, because they were made bitter.