Exodus 10:11

10:11 No! Go, you men only, and serve the Lord, for that is what you want.” Then Moses and Aaron were driven out of Pharaoh’s presence.

Exodus 7:22

7:22 But the magicians of Egypt did the same by their secret arts, and so Pharaoh’s heart remained hard, and he refused to listen to Moses and Aaron – just as the Lord had predicted.