'Bitter' in the Bible

Then let him take her to the priest, offering for her the tenth part of an ephah of barley meal, without oil or perfume; for it is a meal offering of a bitter spirit, a meal offering keeping wrongdoing in mind.

And he will make the woman come before the Lord with her hair loose, and will put the meal offering, the offering of a bitter spirit, in her hands; and the priest will take in his hand the bitter water causing the curse;

And he will make her take an oath, and say to her, If no man has been your lover and you have not been with another in place of your husband, you are free from this bitter water causing the curse;

And the priest will put these curses in a book, washing out the writing with the bitter water;

And he will give to the woman the bitter water for drink; and the bitter water causing the curse will go into her.

And he will take some of it in his hand, burning it on the altar as a sign, and then he will give the woman the bitter water.

And it will be that if the woman has become unclean, sinning against her husband, when she has taken the bitter water it will go into her body, causing disease of the stomach and wasting of the legs, and she will be a curse among her people.

Or for a husband who, in a bitter spirit, has doubts in his heart about his wife; let him take her to the priest, who will put in force this law.

In the second month, on the fourteenth day, in the evening, they are to keep it, taking it with unleavened bread and bitter-tasting plants;

And in Moab there was great fear of the people, because their numbers were so great: and the feeling of Moab was bitter against the children of Israel.