'Releasing' in the Bible

But Pharaoh said, "Who is the Lord that I should obey him by releasing Israel? I do not know the Lord, and I will not release Israel!"

Moses said, "I am going to go out from you and pray to the Lord, and the swarms of flies will go away from Pharaoh, from his servants, and from his people tomorrow. Only do not let Pharaoh deal falsely again by not releasing the people to sacrifice to the Lord."

You are still exalting yourself against my people by not releasing them.