God is not Omnipotent
Personally, I feel that most arguments for or against the existence of God are too rooted in normative conventions for my personal beliefs. In other words, I cannot accept arguments based on supposedly established conventions such as good, evil, right, wrong, etc., because those conventions were primarily established through man-made religions.
This is not to say that employing norms such as good and evil are not useful in arguing against the existence of a deity. Using religiously established conventions (Christian norms, in this case) of good and evil, and by understanding the hierarchy of God’s characteristics, we can show that the God that Christians imagine to exist contradicts himself, and therefore cannot exist.
The Christian tradition holds that God is many things: God is love, God is merciful, and so on. One characteristic, a seemingly unavoidable prerequisite to being a deity, is that God is omnipotent. God, according to the Christian tradition, is also good and cannot be or do evil.
The qualifiers that God are that he is A) Omnipotent and B) Good come into sharp contrast and contradiction. If God is in deed able to do anything, God would then be capable of doing evil, blatantly contradicting the assumption that God cannot do evil. Therefore, a God who can only be good and only does good is not omnipotent. A being who is not omnipotent is not God.
A more moderate and more readily acceptable set of qualifiers to the contemporary Christian is that God is A) Omnipotent and B) Capable of doing good or evil, but chooses only to do good. However, this also causes a stark contradiction with the Christian’s perspective of God. If the above is true, then there are still limits on God, rendering him subject to a greater force (and therefore not omnipotent).
First, if God has to be capable of doing only Good or Evil, then God himself must be subject to conventions of Good and Evil. If that is the case, then there is a higher power that reigns above God. This should not be surprising if God is in fact man made. A man made God would be expected to hold up human conventions of Good or Evil, and not the other way around.
If, however, God is the author of Good or Evil, then God himself cannot be Good or Evil, for he is the author. There is the possibility that God created Good and Evil and chose to follow only the conventions of Good, If that is indeed the case, then God, by his own design, is not omnipotent having chose to let his conventions of Good and Evil reign over him.
If the idea of God is shifted to allow him to do evil, then God is not good or evil; whether or not he is good or evil is relative. But if that is the case, then God is not in fact Good, nor is he love, nor is he merciful. God is omnipotent, therefore outside of any convention. If that is the case, he is indifferent to our plight as humans, indifferent as to whether or not we love him, and indifferent as to whether or not we spend eternity in pleasure or in eternal pain. But if he is subject to those conventions, then he can’t not love and can’t not care, and therefore he is not God, having allowed those conventions to rule over him.