All the people perceived the thunder and the lightning flashes and the sound of the trumpet and the mountain smoking; and when the people saw it, they trembled and stood at a distance.

So it came about on the third day, when it was morning, that there were thunder and lightning flashes and a thick cloud upon the mountain and a very loud trumpet sound, so that all the people who were in the camp trembled.

Moses stretched forth his rod toward the heavens, and the LORD sent thunder, hail, and lightning flashed down to the earth. The LORD rained hail on the land of Egypt.

The hail, with lightning flashing through it, was so severe that nothing like it had occurred in the land of Egypt since it had become a nation.