evil does not exist in any form it is merely as Ayer puts it emotional ejaculations to our naturalistic reactions to things. For example someone being murdered evokes repulsive feelings as well as error due to the hyperactivation of our sympathetic nervous system hence we view murder as inherently wrong. You may counter this and say our intuitions are the foundations for our morals but when you consider that they are socially preconditioned this loses its cutting edge. Morality has not been a pragmatic basis for human civilization and it has been continually side stepped because innately human are primal animals thus evil cannot exist for morality is a mere metaphysical attribution that cannot be actualized in the physical world. There is no faculty in our mind that categorically recognizes evil or good unless you can prove to me otherwise. In other words as John Mackie said morality is metaphysically Queer.Simply put morality is dysteleogical in a world that has been run on bloodshed and savagery. Despite the existence of polytheism and religion as well as even moral precepts humans have committed heinous acts simply because morality can never be empirically verifiable making it loses any sense of its epistemological basis. Our amygdala does not look at rose tinted morals when we make impulsive reactions that our somehow evil in themselves, thus our anger our fear cannot be deemed as evil but natural courses of human nature.
If you believe in morality from a deity you have to contend with the Euthyphro dilemma does god command our actions because it is good or does god command our actions because they are intrinsically good which leads to self defeating scenarios for morality either that god can arbitrarily change morality hindering its sphere of influence or god chooses what is good because it is good in that case morality takes power over god.
Evil simply cannot exist because ascribing evil to moral precepts or to some subjective visceral reaction is inherently irrational but also subjective in nature. Our ancestors cared little for morality and often thought pragmatically by killing predators larger then them so that they could survive and reproduce in what is known as Darwin's theory of survival of the fittest. Morality if anything has become institutionalized and evil acts which are not evil have been given labels. Rape, murder, genocide and some of the evil depravities the world has ever seen are simply normal and are apart of the deterministic chains of cause and effect, they are a prerequisite for existence thus evil in a sense cannot truly exist for it is a determinant in a world that requires it to function making it is label of evil erroneous and subjective as it is part and parcel of human nature.
evil is real. the bible says evil exists and defines it. romans 1 and 2 both talk about how gods law is written on our hearts and that men will be judged on the last day by their thoughts and actions. some people can scar it though by doing evil. men have an evil sinful nature and so they scar it. that's why kids never have to be taught how to lie but the do need to be taught how to do good and obey their parent because kids and adult naturally rebel and sin. that why cops and government are needed. and that why wars occur and governments are corrupt. as time has progressed people have always clearly been evil. after thousands of years ww2 occurred and atrocities continue. people are naturally evil. people have to change to want others to be seen and cared for more then themselves. this is romans -1:18-32:For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men who suppress the truth in unrighteousness, because that which is known about God is evident within them; for God made it evident to them. For since the creation of the world His invisible attributes, both His eternal power and divine nature, have been clearly seen, being understood through what has been made, so that they are without excuse. For even though they knew God, they did not glorify Him as God or give thanks, but they became futile in their thoughts, and their foolish heart was darkened. Professing to be wise, they became fools, and exchanged the glory of the incorruptible God for an image in the likeness of corruptible man and of birds and four-footed animals and crawling creatures. Therefore God gave them over in the lusts of their hearts to impurity, so that their bodies would be dishonored among them. For they exchanged the truth of God for a lie, and worshiped and served the creature rather than the Creator, who is blessed forever. Amen. For this reason God gave them over to dishonorable passions; for their females exchanged the natural function for that which is unnatural, and in the same way also the males abandoned the natural function of the female and burned in their desire toward one another, males with males committing indecent acts and receiving in their own persons the due penalty of their error. And just as they did not see fit to acknowledge God, God gave them over to an unfit mind, to do those things which are not proper, having been filled with all unrighteousness, wickedness, greed, evil; full of envy, murder, strife, deceit, malice; they are gossips, slanderers, haters of God, violent, arrogant, boastful, inventors of evil, disobedient to parents, without understanding, untrustworthy, unloving, unmerciful; and although they know the righteous requirement of God, that those who practice such things are worthy of death, they not only do the same, but also give hearty approval to those who practice them. -HOW ELSE could 8 billion people on planet earth know rape and child abuse are wrong? people on different continents before they ever knew each other and before adult hood naturally agree that murder and child abuse is objectively wrong. would anyone ever say it depends on opinion. NO.
so why are we talking about evil if does not exist?