It is also clear that Hezekiah was very knowledgeable of the scriptures and the law of Moses. Notice it is Hezekiah who sets up all of these positions (not the Levites).
"And Hezekiah appointed the courses of the priests and the Levites after their courses, every man according to his service..." -- II Chronicles 31:2
The other thing that strikes me on this reading of chapter 31 is the carefully listing of the proper names of Levites involved in the administration of the priesthood. I've learned over the years that a proper name given in the Bible always has some significance (this would be an interesting study in its self). Great detail is given here of the names of men and their responsibilities along with some information about their genealogies. There is something here to be gleamed if one is diligent enough to explore.
As for Hezekiah, he didn't hold back anything. You get the full sense that he did everything in his power (with all his heart) to bring the kingdom back to the place where he believe God wanted it. For this, God greatly blessed him.
And in every work that he began in the service of the house of God, and in the law, and in the commandments, to seek his God, he did it with all his heart, and prospered. -- II Chronicles 31:21
