'Dark' in the Bible

Let their way be dark and slippery,With the angel of the Lord pursuing them.

Consider the covenant;For the dark places of the land are full of the habitations of violence.

I will open my mouth in a parable;I will utter dark sayings of old,

You have put me in the lowest pit,In dark places, in the depths.

He sent darkness and made it dark;And they did not rebel against His words.

Even the darkness is not dark to You,And the night is as bright as the day.Darkness and light are alike to You.

For the enemy has persecuted my soul;He has crushed my life to the ground;He has made me dwell in dark places, like those who have long been dead.