"God is never at a loss because He cannot find someone to cooperate with Him in carrying out His plan. He so moves in the hearts of people - either Christians or non Christians, it makes no difference - that they willingly, of their own free will carry out His plans."

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If a thing is free to be good it is also free to be bad. And free will is what has made evil possible. Why, then, did God give them free will? Because free will, though it makes evil possible, is also the only thing that makes possible any love or goodness or joy worth having.

— C. S. Lewis