'Law of Moses' in the Bible

Also Jehoiada appointed the offices of the house of the LORD by the hand of the priests the Levites, whom David had distributed in the house of the LORD, to offer the burnt offerings of the LORD, as it is written in the law of Moses, with rejoicing and with singing, as it was ordained by David.

But he did not put their children to death, for he kept the orders of the Lord recorded in the book of the law of Moses, saying, The fathers are not to be put to death for their children or the children for their fathers, but a man is to be put to death for the sin which he himself has done.

And they stood in their place after their manner, according to the law of Moses the man of God: the priests sprinkled the blood, which they received of the hand of the Levites.