'Book of the Law' in the Bible

And the LORD shall separate him unto evil out of all the tribes of Israel, according to all the curses of the covenant that are written in this book of the law:

If you shall hearken unto the voice of the LORD your God, to keep his commandments and his statutes which are written in this book of the law, and if you turn unto the LORD your God with all your heart, and with all your soul.

Take this book of the law, and put it by the side of the ark of the covenant of the LORD your God, that it may be there for a witness against you.