'Rule' in the Bible

"And you will keep this event as a rule for you and for your children forever.

And he cried out to Yahweh, and Yahweh showed him [a piece of] wood, and he threw [it] into the water, and the water became sweet. There he made a rule and regulation for them, and there he tested them.

When {they have an issue}, it comes to me, and I judge between a man and his neighbor, and I make known God's rule and his instructions."

And you will gird Aaron and his sons [with] sashes and wrap headdresses on them. And priesthood will be theirs as a lasting rule, and {you will ordain Aaron and his sons.}

And it will be for Aaron and for his sons as a lasting rule from the {Israelites}, because it is a contribution, and it will be a contribution from the {Israelites} from their sacrifices of fellowship, their contribution to Yahweh.

And they will wash their hands and their feet so that they do not die, and it will be a lasting rule for them--to him and to his offspring throughout their generations.