Acts 8:23
For I see that thou art in the gall of bitterness, and the bond of iniquity.
Romans 1:31
unintelligent, unfaithful to engagements, unnatural, implacable, unmerciful:
2 Timothy 3:3
unnatural, implacable, slanderers, intemperate, inhuman, averse to goodness,
Hebrews 12:15
carefully observing lest any of you fail of attaining the grace of God; lest any root of bitterness springing up trouble you, and by it many be defiled;
Revelation 8:10-11
And the third angel blew the trumpet, and there fell from heaven a great star, burning as a torch, and it fell upon the third part of the rivers, and upon the fountains of water;