There is no reasonable doubt that this “book of the law” was the Pentateuch, in nearly the same form we have it today. Copies of the whole Law were…

And they taught in Judah
The people their duty to God and man:

and had the book of the law of the…

Jehoshaphat found his people generally very ignorant, and therefore endeavoured to have them well taught. The public teaching of the word of God fo…