Then, the only power of choice God gave Man is a power that will choose evil.
Then, Man is unable to choose good because his only power of choice will choose evil.
Then, as Man did not make nor select his power of choice, Man cannot be blamed if that power chooses evil.
Then, the blame must be God's, who gave Man a power of choice that would choose evil.
Then, Man cannot sin against God, for Man can only use the power God gave him, and can only use that power in the way in which that power will work.
The word "will" is a misleading word. What is will? Will is not a faculty, like the faculty of speech or touch. The word will is a symbol, and means the balance between two motives or desires.
Will is like the action of balance in a pair of scales. It is the weights in the scales that decide the balance. So it is the motives in the mind that decide the will. When a man chooses between two acts we say that he "exercises his will"; but the fact is, that one motive weighs down the other, and causes the balance of the mind to lean to the weightier reason. There is no such thing as an exterior will outside the man's brain, to push one scale down with a finger. Will is abstract, not concrete.
A man always "wills" in favour of the weightier motive. If he loves the sense of intoxication more than he loves his self-respect, he will drink. If the reasons in favour of sobriety seem to him to outweigh the reasons in favour of drink, he will keep sober.
Will, then, is a symbol for the balance of motives. Motives are born of the brain. Therefore will depends upon the action of the brain.
God made the brain; therefore God is responsible for the action of the brain; therefore God is responsible for the action of the will.