Of course I can be the deepest and darkest of things but I can always be the lightest and brightest of things as well.
Light workers and dark workers are being fed their inspiration from somewhere as everything else in the universe does which promotes growth, like *cough cough* the sun and black holes.
7 I form the light, and create darkness:
I make peace, and create evil: I the Lord do all these things. ⁂