'Dark' in the Bible

Let their way be dark and slippery, Yahweh's angel pursuing them.

Honor your covenant, for haunts of violence fill the dark places of the earth.

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

Are your wonders made known in the dark? Or your righteousness in the land of forgetfulness?

He sent darkness, and made it dark. They didn't rebel against his words.

For the enemy pursues my soul. He has struck my life down to the ground. He has made me live in dark places, as those who have been long dead.