Rabbi Yossi Kahanov Shliach to Jacksonville, FL
But I will harden Pharaoh’s heart, and I will increase My signs and My wonders in the land of Egypt. – Exodus 7:3
Come to Pharaoh (and warn him) for I have hardened his heart and the heart of his servants, in order that I may put my miracles in his midst. – Exodus 10:1
The Mishna states, “If a person says, ‘I will sin, and then I will do Teshuvah (repent),’ then he is not granted the opportunity to do Teshuvah” (Yoma 85a). This appears, at first glance, to suggest that the person is denied the free choice of a later Teshuvah.
However, the Alter Rebbe writes in Tanya (Igeres Hateshuvah ch. 11) that it is still possible for this person to do Teshuvah if, “he pushes himself hard and overcomes his evil inclination,” and then, “his Teshuvah is accepted”.
The same could be argued for Pharaoh, G-d did not take away his free choice; rather, through the evil acts of persecuting the Jewish people he numbed his soul, making it more difficult for him to do Teshuvah. – The Rebbe