Maimonides acknowledged that one might ask: Since God knows everything that will occur before it comes to pass, does God not know whether a person will be righteous or wicked? And if God knows that a person will be righteous, it would appear impossible for that person not to be righteous. However, if one would say that despite God's knowledge that the person would be righteous it is possible for the person to be wicked, then God's knowledge would be incomplete. Maimonides taught that just as it is beyond human potential to comprehend God's essential nature, as says, "No man will perceive Me and live," so, too, it is beyond human potential to comprehend God's knowledge. This was what Isaiah intended when says, "For My thoughts are not your thoughts, nor your ways, My ways." Accordingly, we do not have the potential to conceive how God knows all the creations and their deeds. But Maimonides said that it is without doubt that people's actions are in their own hands and God does not decree them. Consequently, the prophets taught that people are judged according to their deeds.