Exodus 11:7-9

New Century Version

⁷ But not even a dog will bark at the Israelites or their animals.’ Then you will know that the Lord treats Israel differently from Egypt. ⁸ All your officers will come to me. They will bow facedown to the ground before me and say, ‘Leave and take all your people with you.’ After that, I will leave.” Then Moses very angrily left the king.

⁹ The Lord had told Moses, “The king will not listen to you and Aaron so that I may do many miracles in the land of Egypt.”