'Deep Darkness' in the Bible

“Let darkness and gloom claim it for their own;Let a cloud settle upon it;Let all that blackens the day terrify it (the day that I was born).

before I go, never to return, leaving for the land of deep darkness and shadow.

“He reveals mysteries from the darknessAnd brings the deep darkness into light.

My face is red with weeping. Deep darkness is on my eyelids.

But you have said, 'What does God know? Does he judge through such deep darkness?

“For the morning is the same to him as the thick darkness [of midnight];For he is familiar with the terrors of thick darkness.

“Man puts an end to darkness [by bringing in a light],And to the farthest bounds he searches outThe rock buried in gloom and deep shadow.

There is no darkness, no deep darkness,where evildoers can hide themselves.

“Have the gates of death been revealed to you,Or have you seen the gates of deep darkness?