Exodus 9:5

9:4 And the LORD will make a difference between the livestock of Israel and the livestock of Egypt. So nothing shall die of all that belongs to the children of Israel.""'

9:5 Then the LORD appointed a set time, saying, "Tomorrow the LORD will do this thing in the land."

9:6 So the LORD did this thing on the next day, and all the livestock of Egypt died; but of the livestock of the children of Israel, not one died.