'Book of the Law' in the Bible

All the people gathered themselves together as one man into the broad place that was before the water gate; and they spoke to Ezra the scribe to bring the book of the law of Moses, which the LORD had commanded to Israel.

He read therein before the broad place that was before the water gate from early morning until midday, in the presence of the men and the women, and of those who could understand; and the ears of all the people were attentive to the book of the law.

Also day by day, from the first day to the last day, he read in the book of the law of God. They kept the feast seven days; and on the eighth day was a solemn assembly, according to the ordinance.

They stood up in their place, and read in the book of the law of the LORD their God a fourth part of the day; and a fourth part they confessed, and worshiped the LORD their God.