'In the Darkness' in the Bible

He will guard the feet of his faithful ones, but the wicked will be destroyed in the darkness, because a man will not prevail by [his] might.

David’s men said to him, “Behold, this is the day of which the Lord said to you, ‘Behold, I will hand over your enemy to you, and you shall do to him as seems good to you.’” Then David arose [in the darkness] and stealthily cut off the hem (edge) of Saul’s robe.