'Book of the Law' in the Bible

This book of the law shall not depart out of your mouth, but you shall meditate on it day and night, that you may observe to do according to all that is written therein: for then you shall make your way prosperous, and then you shall have good success.

as Moses the servant of Yahweh commanded the children of Israel, as it is written in the book of the law of Moses, an altar of uncut stones, on which no man had lifted up any iron. They offered burnt offerings on it to Yahweh, and sacrificed peace offerings.

Afterward he read all the words of the law, the blessing and the curse, according to all that is written in the book of the law.

"Therefore be very courageous to keep and to do all that is written in the book of the law of Moses, that you not turn aside from it to the right hand or to the left;

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