'Book of the Covenant' in the Bible

He took the Book of the Covenant and read it to the people. They said, "We will put into practice and obey everything that the LORD has decreed."

The king went up to the LORD's Temple, accompanied by all the men of Judah, everyone who lived in Jerusalem, the priests, the prophets, and everyone including those who were unimportant and those who were important and he read to them everything written in the Book of the Covenant that had been discovered in the LORD's Temple.

After this, the king commanded all of the people, "Celebrate the Passover to the LORD your God, just as it's prescribed in this Book of the Covenant."

Then the king went up to the LORD's Temple, accompanied by the men of Judah, the inhabitants of Jerusalem, the priests and descendants of Levi, and everyone else from the most important to the least important, and he read out loud all the words of the book of the covenant that had been found in the LORD's Temple.