May Yahweh give you discretion and understanding, and put you in charge of Israel; that so you may keep the law of Yahweh your God.
The significance here is the reference to the Law of God through Moses, a reference to  Exodus 20:1, and the direct quotations from  Exodus 3:4 and  Joshua 1:6-9 and  Deuteronomy 31:24, thus providing incontrovertible evidence of the prior existence of the Pentateuch long centuries prior to the discovery of that allegedly `false document' in the reign of Josiah.  No wonder the radical critics hate Chronicles.  An example of that hatred is the following.