'Bitter' in the Bible

"A voice was heard in Ramah, wailing and bitter lamentation: It was Rachel bewailing her children, and she refused to be comforted because there were no more."

and the people stood looking on. The Rulers, too, repeatedly uttered their bitter taunts. "This fellow," they said, "saved others: let him save himself, if he is God's Anointed, the Chosen One."

If a child is circumcised even on a Sabbath day, are you bitter against me because I have restored a man to perfect health on a Sabbath day?

For I am afraid that perhaps when I come I may not find you to be what I desire, and that you may find me to be what you do not desire; that perhaps there may be contention, jealousy, bitter feeling, party spirit, ill-natured talk, backbiting, undue eulogy, unrest;

Alexander the metal-worker showed bitter hostility towards me: the Lord will requite him according to his doings.

Be carefully on your guard lest there be any one who falls back from the grace of God; lest any root bearing bitter fruit spring up and cause trouble among you, and through it the whole brotherhood be defiled;

In a fountain, are fresh water and bitter sent forth from the same opening?

But if in your hearts you have bitter feelings of envy and rivalry, do not speak boastfully and falsely, in defiance of the truth.

The name of the star is 'Wormwood;' and a third part of the waters were turned into wormwood, and vast numbers of the people died from drinking the water, because it had become bitter.

So I went to the angel and asked him to give me the little book. "Take it," he said, "and eat the whole of it. You will find it bitter when you have eaten it, although in your mouth it will taste as sweet as honey."

So I took the roll out of the angel's hand and ate the whole of it; and in my mouth it was as sweet as honey, but when I had eaten it I found it very bitter.