Exodus 11:9
Then the Lord said to Moses, “Pharaoh will not listen to you, so that My wonders (miracles) may be multiplied in the land of Egypt.”
Exodus 7:3-4
And I will make Pharaoh’s heart hard, and multiply My signs and My wonders (miracles) in the land of Egypt.
Exodus 3:19
But I know that the king of Egypt will not let you go unless [he is forced] by a strong hand.
Exodus 10:1
Then the Lord said to Moses, “Go to Pharaoh, for I have hardened his heart and the heart of his servants [making them determined and unresponsive], so that I may exhibit My signs [of divine power]
Romans 9:16-18
So then God’s choice is not dependent on human will, nor on human effort [the totality of human striving], but on God who shows mercy [to whomever He chooses—it is His sovereign gift].