Exodus 11:9
And Yahweh had said unto Moses, Pharaoh will not hearken unto you, - that my wonders may be multiplied in the land of Egypt.
Exodus 7:3-4
But, I, will suffer Pharaoh to harden his heart, - so will I multiply my signs and my wonders in the land of Egypt.
Exodus 3:19
But, I, know, that the king of Egypt will not suffer you to go, - not even by a firm hand.
Exodus 10:1
Then said Yahweh unto Moses, Go in unto Pharaoh, - for, I, have suffered his heart to be dull and the heart of his servants, that I may show these my signs, in their midst;
Romans 9:16-18
Hence, then, it is nor of him that wisheth nor of him that runneth, but of the mercy-shewing God.