Why should you be stubborn, as the king of Egypt and the Egyptians were? Don't forget how God made fools of them until they let the Israelites leave Egypt.
So Moses and Aaron went to the king and said to him, “The Lord, the God of the Hebrews, says, ‘How much longer will you refuse to submit to me? Let my people go, so that they may worship me.
I will make the Egyptians so stubborn that they will go in after them, and I will gain honor by my victory over the king, his army, his chariots, and his drivers.
Again the Lord said to Moses, “Now that you are going back to Egypt, be sure to perform before the king all the miracles which I have given you the power to do. But I will make the king stubborn, and he will not let the people go.
But you have a hard and stubborn heart, and so you are making your own punishment even greater on the Day when God's anger and righteous judgments will be revealed.
Instead, in order that none of you be deceived by sin and become stubborn, you must help one another every day, as long as the word “Today” in the scripture applies to us.