Exodus 11:10
“And Moses and Aaron did all these wonders before Pharaoh: and the Lord hardened Pharaoh’s heart, so that he would not let the children of Israel go out of his land.”
And all these thy servants shall come down unto me, and bow down themselves unto me, saying, Get thee out, and all the people that follow thee: and after that I will go out. And he went out from Pharaoh in a great anger.
And the Lord said unto Moses, Pharaoh shall not hearken unto you; that my wonders may be multiplied in the land of Egypt.
And Moses and Aaron did all these wonders before Pharaoh: and the Lord hardened Pharaoh’s heart, so that he would not let the children of Israel go out of his land.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Related Verses
“But the Lord hardened Pharaoh’s heart, so that he would not let the children of Israel go.”
“But the Lord hardened Pharaoh’s heart, and he would not let them go.”
“And the Lord said unto Moses, Pharaoh shall not hearken unto you; that my wonders may be multiplied in the land of Egypt.”
“And the heart of Pharaoh was hardened, neither would he let the children of Israel go; as the Lord had spoken by Moses.”
“And the Lord said unto Moses, Go in unto Pharaoh: for I have hardened his heart, and the heart of his servants, that I might shew these my signs before him:”