Covenant Heart

2 Chronicles 34:31
The king stood by his pillar and renewed the covenant in the presence of the LORD -to follow the LORD and keep his commands, regulations and decrees with all his heart and all his soul, and to obey the words of the covenant written in this book.
Verse 30 speaks of the Book of the Covenant that Josiah read to everyone crowded into the Temple--all Israelites, from the least to the greatest. I looked up that phrase itself: "Book of the Covenant." It appears only 4 times total. The first is in Exodus 24:7, when Moses reads it to the Israelites. Matthew Henry suggests that Moses had himself just written it, so as to be sure it is exactly as God said it.
The other 3 times are this occasion, when Josiah reads it, and it is as if it was just written. I am struck here that it is the king who renews the covenant. If any one person should, I suppose it would be the king. The next verse says he had all the people do it as well, and they did.
As long as Josiah lived, the people served