"Therefore I will not keep silent; I will speak out in the anguish of my spirit, I will complain in the bitterness of my soul." (NIV)
Therefore I will not restrain my mouth; I will speak in the anguish of my spirit, I will complain in the bitterness of my soul [O Lord]! (AMP)
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. (KJV)