For "Act of God" see the dictionary definition:
act of God - definition of act of God by the Free Online Dictionary, Thesaurus and Encyclopedia.
"A manifestation especially of a violent or destructive natural force, such as a lightning strike or earthquake, that is beyond human power to cause, prevent, or control."
PS The word "got" grates on my NES ear a little.
I would have personally said:
"Today we experienced an act of God."
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