What does Exodus 10:1 mean?

Then the Lord said to Moses, 'Go to Pharaoh again. I’ve made him and his officials stubborn so I can show them these signs and you can tell your children and grandchildren how I dealt with Egypt and showed my power. That way, you’ll know I am the Lord.' Exodus 10:1 - Modern Text Bible

(God explains that Pharaoh’s stubbornness is part of his plan to demonstrate his power and give Israel a story to remember and pass down.)