Arcana Coelestia # 7733
7733. 'And Jehovah made Pharaoh's heart unyielding' means that they remained obstinately opposed to the Divine, as above in 7706.
Arcana Coelestia # 7706
7706. 'And Jehovah made Pharaoh's heart unyielding' means that the molesting ones remained obstinate. This is clear from the meaning of 'making the heart unyielding' as remaining obstinate, dealt with in 7272, 7300, 7305. When it says that Jehovah made Pharaoh's heart unyielding the meaning in the internal sense is that he himself made his heart unyielding, see 7632; and the evil which in the Word is attributed to Jehovah has its origin in man, 2447, 6071, 6991, 6997, 7533.