Act Of God

Acts 5:38, 39
New World Translation of the Holy Scriptures (Study Edition)

38 So under the present circumstances, I say to you, do not meddle with these men, but let them alone. For if this scheme or this work is from men, it will be overthrown; 39 but if it is from God, you will not be able to overthrow them.+ Otherwise, you may even be found fighters against God himself.”+ 
To me, this is the best explanation for the wrongly concept of ACT OF GOD.

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against the sphere. The audience were
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about to see something amazing
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[Music]
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inside the glass sphere a strange
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ethereal light began to form dancing
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around his hand a light no one had ever
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seen before. Oh, that’s fantastic!
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You see a beautiful blue glows is marking
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out the shape of my hands but then going
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like round the board, There’s something
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alive in there.
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it’s difficult to really understand why
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this dancing blue light meant so much
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but we have to bear in mind that at the
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time, natural phenomena like this was
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seen to be the work of the Almighty.  Dr Patricia Fara, University of Cambridge: This
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was still a period when even in Isaac
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Newton’s theory, God was constantly
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intervening in the conduct of the world
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and so it made sense for a lot of people
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to interpret natural phenomena as acts
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of God. So when a mere mortal meddled
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with God’s work
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it was almost beyond rational
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comprehension.

People calls natural disasters –those ones originated by geophysical events as earthquakes, volcano activity, storms, hurricanes, floods, droughts, etc., as Acts of God just only because they can’t understand the phenomenon itself.

The worse comes with people not knowing some of these events happening nowadays are truly man-made.