Exodus 10:15

For they covered the face of the whole earth, so that the land was darkened; daylight was shut out by the density of the swarms as they came on; and they did eat every herb of the land, and all the fruit of the trees which the hail had left; and there remained not any green thing in the trees or in the herbs of the field through all the land of Egypt. It was a complete devastation of the land, a punishment whose severity had been increased over the preceding plagues.