Exo Exodus, chapter Book of Exodus, chapter 4
The Lord told Moses, “When you get back to Egypt, make sure to go to Pharaoh and carry out the miracles I've given you to do. I will make him stubborn4:21. “Stubborn”: literally, “harden his heart,” similarly translated throughout the book. The same experience is described as being God's action, Pharaoh's own action, and also in the passive with no agent identified. and he will not let the people go. Rom 9:18