So Aaron extended his hand over the waters of Egypt, and frogs came up and covered the land of Egypt.

In the evening the quail came up and covered the camp, and in the morning a layer of dew was all around the camp.

When the layer of dew had evaporated, there on the surface of the desert was a thin flaky substance, thin like frost on the earth.

During that long period of time the king of Egypt died, and the Israelites groaned because of the slave labor. They cried out, and their desperate cry because of their slave labor went up to God.