What does Ezekiel 28:2 mean?

'Son of man, tell the ruler of Tyre: This is what the Lord God says: Your heart is full of pride, and you say, 'I'm a god. I sit on the throne of the gods in the heart of the sea.' But you're just a human, not a god, even though you think you're as wise as a god.' Ezekiel 28:2 - Modern Text Bible

(The ruler of Tyre is accused of arrogance, thinking of himself as divine and all-wise, but God reminds him he's only human.)