9 And the Lord said unto Moses, Pharaoh will not hearken unto you; in order that my wonders may be multiplied in the land of Egypt.
Exodus 11:9 Cross References - Leeser
Exodus 3:19
19 But I am sure that the king of Egypt will not let you go, unless it happen through a mighty hand.
Exodus 7:3-4
Exodus 10:1
1 And the Lord said unto Moses, Go in unto Pharaoh; for I have hardened his heart, and the heart of his servants, in order that I might display these my signs in the midst of them: