'Statute Forever' in the Bible
"The sons of Aaron, the priests, shall blow the trumpets. This shall be to you for a statute forever throughout your generations.
There shall be one [and the same] statute [both] for you [of the congregation] and for the stranger who is a temporary resident with you, a statute forever throughout your generations: as you are, so shall the stranger be before the Lord.
And this is yours; the heave offering of their gift, with all the wave offerings of the children of Israel: I have given them unto you, and to your sons and to your daughters with you, by a statute forever: everyone that is clean in your house shall eat of it.
All the heave offerings of the holy things, which the children of Israel offer unto the LORD, have I given you, and your sons and your daughters with you, by a statute forever: it is a covenant of salt forever before the LORD unto you and to your descendants with you.
But the Levites shall do the [menial] service of the Tent of Meeting, and they shall bear and remove the iniquity of the people [that is, be answerable for the legal pollutions of the holy things and offer the necessary atonements for unintentional offenses in these matters]. It shall be a statute forever in all your generations, that among the Israelites the Levites have no inheritance [of land].
He who gathers the ashes of the heifer shall wash his clothes, and be unclean until the evening: and it shall be to the children of Israel, and to the stranger who lives as a foreigner among them, for a statute forever.