'Law of Moses' in the Bible

And Jehoiada placed appointees [at] the house of Yahweh under the hand of the Levitical priests whom David had allotted to the house of Yahweh to offer burnt offerings to Yahweh as was written in the law of Moses, with joy and with song, according to the {order of David}.

Then they stood at their positions according to custom, according to the law of Moses the man of God. The priests were sprinkling the blood from the hand of the Levites.