Moses and Aaron performed all these amazing things in the sight of Pharaoh. But the Lord made Pharaoh stubborn. He wouldn’t let the people of Israel go out of his country.
The Lord spoke to Moses. He said, “When you return to Egypt, do all the amazing things I have given you the power to do. Do them in the sight of Pharaoh. But I will make him stubborn. He will not let the people go.
In spite of that, he will not listen to you. So I will use my powerful hand against Egypt. When I judge them with mighty acts, I will bring my people Israel out like an army on the march.
Pharaoh searched and found out what had happened. He discovered that not even one animal that belonged to the Israelites had died. But he was still very stubborn. He wouldn’t let the people go.
“The Lord has blinded their eyes. He has closed their minds. So they can’t see with their eyes. They can’t understand with their minds. They can’t turn to the Lord. If they could, he would heal them.” (Isaiah 6:10)
The Lord himself made their people stubborn. He made them go to war against Israel so he could totally destroy them. He wanted to wipe them out. He didn’t show them any mercy. The Lord had commanded Moses to destroy the Canaanites.