What does 2 Chronicles 29:24 mean?

and the priests killed the goats as a sin offering to make things right for all Israel. The king had ordered this, because the whole nation needed forgiveness. 2 Chronicles 29:24 - Modern Text Bible

(The goats were sacrificed to cover the people’s sins. Hezekiah wanted to make sure everyone, not just Judah, was included in this act of repentance.)