What does Exodus 10:3 mean?

So Moses and Aaron went to Pharaoh and said, 'This is what the Lord, the God of the Hebrews, says: How long will you refuse to humble yourself before me? Let my people go so they can worship me.' Exodus 10:3 - Modern Text Bible

(Moses confronts Pharaoh directly, calling out his pride and repeating God’s demand for freedom.)