'Dark' in the Bible

The sun will become dark, and the moon turn to blood, before the coming of the great and glorious Day of the Lord.

The Lord is against you now, and you'll be blind and unable to see the sun for a while!" At that moment a dark mist came over him, and he went around looking for someone to lead him by the hand.

To make their eyes open, turning them from the dark to the light, and from the power of Satan to God, so that they may have forgiveness of sins and a heritage among those who are made holy by faith in me.