Belief in God is rational.
Everything has a cause. So unless there is a first cause, then you would have an infinite regress. And then nothing could exist. Therefore there must be a first cause. Therefore God, the first cause, exists. QED.
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23.7.16
Munich
The motive was clear. It was to kill infidels. They were to him “foreigners.” This was done in the name of a false god. How much clearer could it possibly be?