Revelation 8:11

the name of the star was wormwood: and the third part of the waters became wormwood; and many men died of the waters, because they were made bitter.

Hebrews 12:15

take care not to deprive yourselves of the divine favour: and that no poisonous root spring up, and spread a general infection among you.

Revelation 8:7

the first angel sounded, and there followed hail and fire mingled with blood, which fell upon the earth: and a third part of the earth, and a third part of the trees was burnt up, and all the green grass.

Treasury of Scripture Knowledge

Summary

And the name of the star is called Wormwood: and the third part of the waters became wormwood; and many men died of the waters, because they were made bitter.

Wormwood

Bible References

Wormwood

Hebrews 12:15
take care not to deprive yourselves of the divine favour: and that no poisonous root spring up, and spread a general infection among you.