'Dark' in the Bible

Let the stars of the twilight thereof be dark; let it look for light, but have none; neither let it see the dawning of the day:

They grope in the dark without light, and he maketh them to stagger like a drunken man.

The light shall be dark in his tabernacle, and his candle shall be put out with him.

And thou sayest, How doth God know? can he judge through the dark cloud?

In the dark they dig through houses, which they had marked for themselves in the daytime: they know not the light.