'Ordinance' in the Bible

They celebrated the Festival of Booths as prescribed, and offered burnt offerings each day, based on the number specified by ordinance for each festival day.

And when the builders laid the foundation of the temple of the LORD, they set the priests in their apparel with trumpets, and the Levites the sons of Asaph with cymbals, to praise the LORD, after the ordinance of David king of Israel.