Deuteronomy 19:14
Thou shalt not remove thy neighbour’s landmark, which they of old time have set in thine inheritance, which thou shalt inherit in the land that the LORD thy God giveth thee to possess it. Thou shalt not remove thy neighbour’s landmark, which they of old time have set in thine inheritance, which thou shalt inherit in the land that the LORD thy God giveth thee to possess it.
The command stands in the fifth and last book of the Pentateuch. It belongs to the second of three addresses given by Moses just before his death. That middle address spans chapters 5 to 26 and reviews the law for the new generation. From that review the book takes the name Deuteronomy, meaning second law or duplicate of the law.
The command forbids moving a neighbor's boundary marker from the place earlier generations established it. It thereby protects inherited land from encroachment. That inheritance is received in the land that the Lord God gives to possess.
The specific seventh day is an ancient landmark and stake that God himself set. Its starting point is given in Remember, so it is not left at loose ends to be reckoned from other data. It must not be tampered with by men, societies, nations, or the Pope. Woe comes on anyone who removes it.