'Bitter' in the Bible

Your wickedness will chastise you, and your apostasies will reprove you. Therefore know and see that [it is] evil and bitter, your forsaking of Yahweh, your God, and fear of me [is] not in you," {declares} the Lord, Yahweh of hosts.

"You obtained this for yourself [because of] your way and your deeds. This [is] your doom, for [it is] bitter, yes, it has reached up to your heart."