'Bitterness' in the Bible

The priest shall then have the woman stand before the Lord and let the hair of the woman’s head go loose, and place the grain offering of memorial in her hands, which is the grain offering of jealousy, and in the hand of the priest is to be the water of bitterness that brings a curse.

The priest shall have her take an oath and shall say to the woman, “If no man has lain with you and if you have not gone astray into uncleanness, being under the authority of your husband, be immune to this water of bitterness that brings a curse;

‘The priest shall then write these curses on a scroll, and he shall wash them off into the water of bitterness.

Then he shall make the woman drink the water of bitterness that brings a curse, so that the water which brings a curse will go into her and cause bitterness.

When he has made her drink the water, then it shall come about, if she has defiled herself and has been unfaithful to her husband, that the water which brings a curse will go into her and cause bitterness, and her abdomen will swell and her thigh will waste away, and the woman will become a curse among her people.

Then Samuel said, “Bring me Agag, the king of the Amalekites.” And Agag came to him cheerfully. And Agag said, “Surely the bitterness of death is past.”

“Therefore I will not restrain my mouth;I will speak in the anguish of my spirit,I will complain in the bitterness of my soul.

“He will not allow me to get my breath,But saturates me with bitterness.

“I loathe my own life;I will give full vent to my complaint;I will speak in the bitterness of my soul.

The heart knows its own bitterness,And a stranger does not share its joy.

A foolish son is a grief to his fatherAnd bitterness to her who bore him.

“What shall I say?For He has spoken to me, and He Himself has done it;I will wander about all my years because of the bitterness of my soul.

“Lo, for my own welfare I had great bitterness;It is You who has kept my soul from the pit of nothingness,For You have cast all my sins behind Your back.

He has besieged and encompassed me with bitterness and hardship.

He has filled me with bitterness,He has made me drunk with wormwood.

Remember my affliction and my wandering, the wormwood and bitterness.

“Also they will make themselves bald for youAnd gird themselves with sackcloth;And they will weep for you in bitterness of soulWith bitter mourning.