God hardens Pharaoh's heart. Pharaoh hardens his heart. Pharaoh's heart was hardened. So which is it? Who is hardening Pharaoh's heart? How can we decipher what is happening to Pharaoh's heart? In the first plague the waters in the Nile become blood. Why blood?

What is God doing in these plagues on Egypt? Who is God executing judgment upon with these plagues.