They made their lives bitter with hard service in mortar, brick, and all kinds of work in the field. All their service was with harshness and severity.

They shall eat the flesh that night roasted; with unleavened bread and bitter herbs they shall eat it.

On the fourteenth day of the second month in the evening they shall keep it, and eat it with unleavened bread and bitter herbs.

And she said to them, Call me not Naomi [pleasant]; call me Mara [bitter], for the Almighty has dealt very bitterly with me.

Therefore thus says the Lord of hosts, the God of Israel: Behold, I will feed them, even this people, with wormwood and give them bitter and poisonous water to drink.

For behold, I am rousing up the Chaldeans, that bitter and impetuous nation who march through the breadth of the earth to take possession of dwelling places that do not belong to them.

For I see that you are in the gall of bitterness and in a bond forged by iniquity [to fetter souls].

Exercise foresight and be on the watch to look [after one another], to see that no one falls back from and fails to secure God's grace (His unmerited favor and spiritual blessing), in order that no root of resentment (rancor, bitterness, or hatred) shoots forth and causes trouble and bitter torment, and the many become contaminated and defiled by it -- "