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Virtues cannot be created instantaneously; the process by which they are acquired is part of the nature of having them. Each of us is given an opportunity to develop into a better or worse person. But we cannot grow in an environment that is free of risk and danger and disappointment. Just as God had good reasons for creating us with free will and for placing us in a lawlike environment, God also had good reasons for placing us in an environment that is challenging, that tests us.
-- Ron Nash, Faith and Reason, p 204