When one gives up Christian belief, one thereby gives up the right to Christian morality.....if one breaks out of it a fundamental idea, the belief in God, one thereby breaks the whole thing to pieces; one has nothing of any consequences left in one's hands. Christian morality is a command, it's origin is transcendental. It possess truth only if God is truth----it stands or falls with belief in God.
----Friedrich Nietzsche, Twilight of the Idols
Sermon on forgiveness with John MacArthur.