Pharaoh... sinned yet more, and hardened his heart. — As Pharaoh had never been so much moved previously, so it now required a greater effort of his will to “harden his heart” than it had ever done before; and thus he now “sinned yet more” than he had as yet sinned. It seems strange that the mercy of God should still have allowed him one other chance (Exodus 10:3-6).
Related Commentaries of Exodus 9:34
Exodus 9:34
34 And when Pharaoh saw that the rain and the hail and the thunders were ceased, he sinned yet more, and hardened his heart, he and his servants.