'Dark' in the Bible

Look attentively to the covenant, For the dark places of earth, Have been full of habitations of violence.

Thou hast put me in the lowest pit, In dark places, in depths.

He hath sent darkness, and it is dark, And they have not provoked His word.

Inhabitants of dark places and death-shade, Prisoners of affliction and of iron,

He bringeth them out from the dark place, And death-shade, And their bands He draweth away.

For an enemy hath pursued my soul, He hath bruised to the earth my life, He hath caused me to dwell in dark places, As the dead of old.