In a sense he “can’t” because he won’t. He is in a sense “unable” to do wrong. (In which if we were to apply this to the issue of Calvinism, he would be unable to determine someone to murder or r*pe. Therefore even if you believe that God has no freeness of will, then logically, Calvinism cannot be true) (Also if you believe that logic is concept put forth by carnal men, then that’s another issue). With that aside, I am essentially “unable” to murder a man, because I *won’t*, doesn’t mean I couldn’t. I still have the choice to murder or not, I will just always choose to not.