Velokovsky said the Exodus was sponsored by the volcanic eruption. A lot changed for civilization right then.No, he didn't, but he discussed (and dismissed) a 19th c work, "Mount Sinai a Volcano".
Earth in Upheaval, Ages in Chaos, or the other one I forget the title right now goes into the volcano idea at length. Pillar of Smoke, plagues on Egypt, all that.