'Bitter' in the Bible

So she came to the man of God at the mountain, and she caught hold of his feet. Then Gehazi came near to push her away, but the man of God said, "Let her alone, for her soul is bitter, and Yahweh has hidden it from me and has not told me."

For Yahweh saw that the misery of Israel was very bitter, whether bond or free, but there was no helper for Israel.