What does 2 Chronicles 34:30 mean?

He went up to the Lord’s temple with all the people from Jerusalem and Judah, along with the priests and Levites, and everyone from the youngest to the oldest. He read out loud everything from the book of the covenant they’d found in the Lord’s temple. 2 Chronicles 34:30 - Modern Text Bible

(Josiah makes sure everyone hears the words from the book. He wants the whole community to know what God expects.)