Revelation 8:11

(The star is called 'Wormwood.') A third of the water became bitter as wormwood, and so bitter was the water that many died from drinking it.

Treasury of Scripture Knowledge

Summary

Therefore thus saith the LORD of hosts, the God of Israel; Behold, I will feed them, even this people, with wormwood, and give them water of gall to drink.

Bible References

I will

Revelation 8:11
(The star is called 'Wormwood.') A third of the water became bitter as wormwood, and so bitter was the water that many died from drinking it.