'Bitter' in the Bible

Husbands, love your wives and don’t be bitter toward them.

Does a spring pour out sweet and bitter water from the same opening?

But if you have bitter envy and selfish ambition in your heart, don’t brag and deny the truth.

The name of the star is Wormwood, and a third of the waters became wormwood. So, many of the people died from the waters, because they had been made bitter.

So I went to the angel and asked him to give me the little scroll. He said to me, “Take and eat it; it will be bitter in your stomach, but it will be as sweet as honey in your mouth.”

Then I took the little scroll from the angel’s hand and ate it. It was as sweet as honey in my mouth, but when I ate it, my stomach became bitter.