'Statute Forever' in the Bible

And the sons of Aaron, the priests, shall blow the trumpets, and they shall be to you for a statute forever throughout your generations.

For the assembly, there shall be one statute for you, and for the stranger who sojourns [with you], a statute forever throughout your generations. As ye are, so shall the sojourner be before LORD.

But the Levites shall do the service of the tent of meeting, and they shall bear their iniquity. It shall be a statute forever throughout your generations. And among the sons of Israel they shall have no inheritance.

And he who gathers the ashes of the heifer shall wash his clothes, and be unclean until the evening. And it shall be to the sons of Israel, and to the stranger who sojourns among them, for a statute forever.