Exodus 9:5-7

New Revised Standard Version Catholic Edition

⁵ The Lord set a time, saying, “Tomorrow the Lord will do this thing in the land.” ⁶ And on the next day the Lord did so; all the livestock of the Egyptians died, but of the livestock of the Israelites not one died. ⁷ Pharaoh inquired and found that not one of the livestock of the Israelites was dead. But the heart of Pharaoh was hardened, and he would not let the people go.