Exodus 11:5-7

Living Bible

⁵ And all the oldest sons shall die in every family in Egypt, from the oldest child of Pharaoh, heir to his throne, to the oldest child of his lowliest slave; and even the firstborn of the animals. ⁶ The wail of death will resound throughout the entire land of Egypt; never before has there been such anguish, and it will never be again.

⁷ “‘But not a dog shall move his tongue against any of the people of Israel, nor shall any of their animals die. Then you will know that Jehovah makes a distinction between Egyptians and Israelis.’