Ten commandments for dating my daughter
In the time when this document was given, physical seals using wax were common.
Whatever the method, the seal of authenticity establishes the source of authority for the document.
On it you shall not do any work, neither you, nor your son or daughter, nor your manservant or maidservant, nor your animals, nor the alien within your gates.
For in six days the Lord made the heavens and the earth, the sea, and all that is in them, but he rested on the seventh day.
The 4th Commandment itself is the seal of authenticity for the 10 Commandments.
No other commandment makes reference to God's source of authority.
The weekly Sabbath that was instituted at creation is an integral part of the creation week. To recognise the creation week as described in the biblical narrative is also to recognise the weekly seventh-day Sabbath.
Note that the commandment refers to the weekly Sabbath as "a Sabbath to the Lord your God".
God directed that the land was to have a sabbath rest every seventh year - i.e.
no crops were to be planted, no pruning of vines, etc.