An Act of God is a large scale destructive event mislabeled as a 'natural disaster' by pagan liberals who refuse to accept that God has a plan beyond human understanding. An example would be a volcano eruption, earthquake, or a hurricane.
Insurance agencies often refer to so-called natural disasters as "Acts of God". Many policies have provisions that companies will not insure against such occurrences. For instance home owner's insurance in southern California does not cover damage done as a result of earthquakes. Earthquake protection must be purchased separately.
The original reference to "Acts of God" in regard to insurance claims came through a court case in 1803.