Exodus 9:4-6

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.