Pyrophany on Mount Horeb: The Burning Bush

The burning bush is one of the most well-known and im-portant miracles in the Pentateuch. Numerous natural explanations have been offered in the literature and a few new ones have been added here, for the bush that burned but was not consumed. Some examples include hallucinogenic drugs, an active volcano, optical illusions, natural gas leak, subterranean fire, St. Elmo’s fire, a bush with red berries or flowers, and a bush that emitted flammable vapors. They have been broadly categorized here based on explanations involving the man Moses, events that might have occurred at the location (Mount Horeb), and explanations involving the bush itself. Those explanations are reviewed here from the perspective of a combustion engineer. The conclusion is that the best explanation for the burning bush is that it was supernatural.