'Ordinance' in the Bible

So they roasted the Passover lambs on the fire according to the ordinance; and they cooked the holy offerings in pots, in kettles, and in pans, and quickly brought them to all the lay people.

Then Jeremiah sung a lament (funeral song) for Josiah, and all the male and female singers have spoken about Josiah in their laments to this day. They made the songs an ordinance in Israel; behold, they are written in the Lamentations.