Questions on Evil and Religious Faith

1. How is the appeal to human freedom a form of theodicy?
2. Why couldn't God create us so that we (like him and those in heaven) always choose freely to act morally?
3. What's wrong with thinking that natural evil is necessary for the development of moral qualities?
4. Why does Kierkegaard think that we cannot prove God's existence but must rely on a leap of faith to experience him as the Unknown?