God can guess better than anyone else, perhaps. But in order for you to have true free will, your decisions must remain unknown until you make them. If all your future actions are already written in stone, free will is only an illusion. At best, God can know all of your possible choices and the choice that you are most likely to make. But there always has to be a margin of error for free will to truly exist.
If the people of God were to transform the world through fascination, these amazing teachings had to work at the center of these peculiar people. Then we can look into the eyes of a centurion and see not a beast but a child of God, and then walk with that child a couple of miles. Look into the eys of tax collectors as they sue you in court; see their poverty and give them your coat. Look in to the eys of the ones who are hardest for you to like, and see the One you love. For God loves good and bad people.