Exodus 9:3-6

behold, the hand of Jehovah is upon thy cattle which are in the field, upon the horses, upon the asses, upon the camels, upon the herds, and upon the flocks: there shall be a very grievous murrain. And Jehovah shall make a distinction between the cattle of Israel and the cattle of Egypt; and there shall nothing die of all that belongeth to the children of Israel. And Jehovah appointed a set time, saying, To-morrow Jehovah shall do this thing in the land. And Jehovah did that thing on the morrow; and all the cattle of Egypt died; but of the cattle of the children of Israel died not one.