'Bitterness of My Soul' in the Bible

Therefore I will not refrain my mouth. I will speak in the anguish of my spirit. I will complain in the bitterness of my soul.

My soul is weary of my life. I will give free reign to my complaint. I will speak in the bitterness of my soul.

What shall I say? He has both spoken to me, and himself has done it. I shall go softly all my years because of the bitterness of my soul.