Evil is not a thing per se, not a power in itself, by definition evil was not created (“And God saw everything that he had made, and behold, it was very good”), but rather evil is the absence of God and His grace.

“This is the message we have heard from him and proclaim to you, that God is light, and in him is no darkness at all.”

~ 1 John 1:5

Exactly as darkness is not a thing, not a force, but merely the absence of light. And our rebellion from the true light of God is the “evil” in our fallen world, a God-shaped emptiness in our hearts (for we are made in His image, icons of the source of all that is good — our rebellion is the empty darkness we call evil).

“For I know that nothing good dwells in me, that is, in my flesh. For I have the desire to do what is right, but not the ability to carry it out. For I do not do the good I want, but the evil I do not want is what I keep on doing.”

~ Romans 7:18-19