When it comes to the plaque of the livestock, the Egyptians are given a choice by the Lord. They can obey Him and bring their livestock into a stable or a barn and the livestock will be spared. But if they choose to disobey Him and leave their livestock out in the field, then their livestock will die. This is the first plague that has permanent consequences. Up until now, the plagues have been a nuisance for the Egyptians, serious be temporary. There is no coming back from this one. The Israelites, however, will not have the same problem. God has promised that their livestock will not suffer death if left in the field. By doing so, God further separates His people from Pharoah's people.