He gave them hail for rain
Egypt, at least part of it, was not used to rain, but was watered by the overflowings of the Nile; but now it had hail for rain, and a grievous hail storm it was, such as was never seen in the land of Egypt before; hail being rare, if ever there, and so frost and snow F1; this was the seventh plague, ( Exodus 9:18-26 ) , compare with this the terrible storm of hail which will fall on men at the pouring out of the seventh vial on spiritual Egypt, ( Revelation 16:21 ) .
F1 Horat. Carmin. l. 3. Ode 26.