'Bitter' in the Bible

“Your own wickedness will correct you,And your apostasies will reprove you;Know therefore and see that it is evil and bitterFor you to forsake the Lord your God,And the dread of Me is not in you,” declares the Lord God of hosts.

“Your ways and your deedsHave brought these things to you.This is your evil. How bitter!How it has touched your heart!”

O daughter of my people, put on sackclothAnd roll in ashes;Mourn as for an only son,A lamentation most bitter.For suddenly the destroyerWill come upon us.

Thus says the Lord,“A voice is heard in Ramah,Lamentation and bitter weeping.Rachel is weeping for her children;She refuses to be comforted for her children,Because they are no more.”