He that regarded not. If there were men who believed in the power and truthfulness of Jehovah, there were probably more who did not believe. As Lot "seemed as one that mocked unto his sons-in-law" (Genesis 19:14), so Moses and Aaron appeared to the great mass of the Egyptians.
As observed above, a hail-storm that could endanger life, either of man or beast, was beyond all Egyptian experience, and must have seemed almost impossible.