-1Evil is not real. Evil is essentially the absence of all good, just as cold is the absence of heat and darkness is the absence of light. From a human perspective, everything has some kind of opposite, and evil is the opposite of good, where in reality evil is only an absence of all goodness, and therefore, evil is relative to good, just as cold and darkness are relative to their so-called opposites. The problem with the human perspective is that humans are inherently flawed and fallible, and thus conclusions drawn based on this perspective are often times also fallible. Pure, complete, pitch-black darkness is merely a measurement in terms of light; otherwise, pure darkness would be something that could be made darker. Darkness is not something that can be measured, or even really perceived without relation to light, and therefore it is nonexistent. The same is essentially true of evil. And, using this mentality, that would mean that darkness is dependant on light, and that evil is dependant on good: light had to exist before darkness, heat before cold, and good before evil. Assuming that God always was (and, it turn, always will be) proves that he is good. God and goodness are, in many ways, synonymous, which would mean that evil is merely the absence of good (or God). However, since God permeates all of existence, this would mean that there is no true evil, only small lacks of goodness. This would mean that the evil we see everyday is not necessarily God's fault, nor is it His will.
Satan, if he is devoid of all good at all (which is unlikely being that he was once a creation of God), is then generally held responsible for the evil we see. This however, is again a view from our human perspective of antonyms. Saying that Satan is the opposite of God would put him on the same level as God. So Satan would be the absence of God, not his definite antonym. However, Satan, as a spiritual being, is only capable of doing spiritual acts of evil. Angels and demons and all other spiritual forces are also bound by this rule, just as physical objects and beings are bound to doing only physical acts. Humanity is the bridge that connects them, however. Humans, as both physical and spiritual beings, can do both physical and spiritual evil as well as good. This sets humankind up as the perfect tool to use for saving or destroying other humans. As a spiritual being, Satan can do no physical evil, and instead uses temptation and lies to fool humans into doing it for him, as with Eve in the Garden of Eden. So it stands to reason that not even Satan can be truly held responsible for all evils.
Only a human can murder another human. As Jesus said, to hate in your heart is to kill with your hands. Murder is an evil on two separate levels, as are most human sins. However, an untold amount of good can also be done by humans. We are the perfect tools for both sides of this war between Satan and God. As with murder, the act of making love can be done on two levels. It can be a beautiful, wonderful thing, but by the same token it can also be corrupt. To have sex without love is, in some ways, the equivalent of accidentally hitting someone with your car: it is merely a physical act. It is much the same with charity, and perhaps a less vulgar example. Giving money to a homeless person is only physical good, but loving that person as yourself and giving of yourself in addition to your act of charity is both a spiritual and a physical good.
So the evil we perceive is not a part of God, but rather a place where He is lacking, usually due to the free choices of humankind. Humans, as spiritual beings, have the capacity for both good and evil, and in the end, no one can truly be blamed for the evil of our world except for ourselves.