'Bitterness' in the Bible

So the spirit lifted me up, and took me away, and I went in bitterness, in the heat of my spirit; but the hand of the LORD was strong upon me.

Sigh therefore, thou son of man, with the breaking of thy loins; and with bitterness sigh before their eyes.

And they shall make themselves utterly bald for thee, and gird them with sackcloth, and they shall weep for thee with bitterness of heart and bitter wailing.