Exodus 2:15

2:15 When Pharaoh heard about this event, he sought to kill Moses. So Moses fled from Pharaoh and settled in the land of Midian, and he settled by a certain well.

Exodus 7:10

7:10 When Moses and Aaron went to Pharaoh, they did so, just as the Lord had commanded them – Aaron threw down his staff before Pharaoh and his servants and it became a snake.

Exodus 8:19

8:19 The magicians said to Pharaoh, “It is the finger of God!” But Pharaoh’s heart remained hard, and he did not listen to them, just as the Lord had predicted.

Exodus 9:7

9:7 Pharaoh sent representatives to investigate, and indeed, not even one of the livestock of Israel had died. But Pharaoh’s heart remained hard, and he did not release the people.