Thy cattle, and all that thou hast in the field. During winter and early spring, the Egyptians kept their cattle "in the field," as other nations commonly do. When the inundation began, they were obliged to bring them into the cities and enclosed villages, and house them.
The time of the "Plague of Hail" appears by all the indications w have been the middle of February. They shall die. Human life was now for the first time threatened. Any herdsmen that remained with the cattle in the open field and did not seek the shelter of houses or sheds would be smitten by the huge jagged hailstones with such force that they would be killed outright, or else die of their wounds.