Jas.3.14But if you have bitter jealousy and selfish ambition in your hearts, do not boast and be false to the truth.
Rev.8.11The name of the star is Wormwood. A third of the waters became wormwood, and many people died from the water, because it had been made bitter.
Rev.10.9So I went to the angel and told him to give me the little scroll. And he said to me, “Take and eat it; it will make your stomach bitter, but in your mouth it will be sweet as honey.”
Rev.10.10And I took the little scroll from the hand of the angel and ate it. It was sweet as honey in my mouth, but when I had eaten it my stomach was made bitter.