Deuteronomy 31:24

“Now it will be when he sits on the throne of his kingdom, that he shall write for himself a copy of this law on a scroll in the presence of the Levitical priests.

“This book of the law shall not depart from your mouth, but you shall meditate on it day and night, so that you may be careful to do according to all that is written in it; for then you will make your way successful, and then you will be prosperous.

And Joshua wrote these words in the book of the law of God; and he took a large stone and set it up there under the oak that was by the sanctuary of Yahweh.

Then Hilkiah the high priest said to Shaphan the scribe, “I have found the book of the law in the house of Yahweh.” And Hilkiah gave the book to Shaphan and he read it.