Now the LORD said to Moses, “Come up to Me on the mountain and remain there, and I will give you the stone tablets with the law and the commandment which I have written for their instruction.”
The pair are a link among many in a symbolic chain of '2s' scattered throughout scripture, denoting the nature of messiah and, inevitably, Shiloh.
This was a characterisation of messiah by two stones in the Ark of the covenant.
So whatever was written on the pair was for symbolic and memorial reasons, more than it was for utility in teaching the laws and the commandmnents.
Even then, had "all the laws and the commandment which I have written for their instruction” been written on the two stone tablets, we would still have a problem of the highly restrictive access into the holy of Holies where they were placed, something even the highest ranking Jew wasn't at liberty to do on whim.
This aspect affirms their purpose, in addition to what Moses does in
24 And it came to pass, when Moses had made an end of writing the words of this law in a book, until they were finished,
25 That Moses commanded the Levites, which bare the ark of the covenant of the LORD, saying,
26 Take this book of the law, and put it in the side of the ark of the covenant of the LORD your God, that it may be there for a witness against thee.
If Moses recited these laws from the stones, then there wouldn't be a need to 're-write that song' in Verses 24-26;
"Take this book of the law, and put it in the side of the ark of the covenant of the LORD your God, that it may be there for a witness against thee"
If anything, What Moses said starting from Deutronomy 6--31 amounted to the 'laws and the commandments', all of which words couldn't fit on the two stones, regardless of what shortened form they might have made of them, if there was short hand back then.
A stone is a generic for a sentient spirit, evil or holy.
In Job 28:3,
He setteth an end to darkness, and searcheth out all perfection: the stones of darkness, and the shadow of death,
They're evil, as their association with darkness and the shadow of death marks them out.
In Luke 19:40,
And he answered and said unto them, I tell you that, if these should hold their peace, the stones would immediately cry out,
Messiah meant if children stopped singing, the angels would pickup from where they left off.
In Psalm 91:12,
They shall bear thee up in their hands, lest thou dash thy foot against a stone,
That's to say, on submission to the will of the Most High, the angels would guide such a one away from the paths in life of the fallen angels.
But the highlight of this symbol is in Ezekiel 28, verses 13-16; and in christianity; Revelation (the City gates and foundations).
14 Thou art the anointed cherub that covereth; and I have set thee so: thou wast upon the holy mountain of God; thou hast walked up and down in the midst of the stones of fire.
Stones of fire are junior orders of angels that the cherub was a 'sherperd' over, that duty was the walking among them.
Not forgetting the stone that is a corner in Psalm 118:22.
And the foundations of the wall of the city were garnished with all manner of precious stones. The first foundation was jasper; the second, sapphire; the third, a chalcedony; the fourth, an emerald;
Here it meant leaders as messiah is a leader and also a stone, a precious cornerstone(the Jasper) in the foundation..Isaiah 28:16 .
This is the symbolism of a stone and the writting on it.
Here are some more of the '2s' in this symbolic chain if you care to follow, and which pairs point to none other than messiah.
In zachariah alone;
2 olive trees (Zechariah 4:3, 11)
2 branches (Zechariah 4:12)
2 golden pipes (Zecharia 4:12)
2 anointed ones Zechariah 4:14
2 mountains (Zechariah 6:1)
2 donkeys (Zechariah 9:9)
2 rivers (Zechariah 14:8)
A king and a priest (also, Joshua and Zerubbabel)
The number two in the book of Zechariah
And the counsel of peace shall be between them both(a '2', Zechariah 6:13)
Else where in the bible;
Bezaleel and oholiab, 'called by name' Exodus 36:2 etc.
Knowing or calling by name is a unique ultimate allusion to messiah and his duties.
Two corner boards joined at the top and the bottom in the tarbenacle of Meeting...Exodus 26:23-24
Elements of the tarbenacle signified servants of God of whom messiah was depicted by several in that Tent including the Ark + its contents, the door to the tarbenacle, its gate and the boards of the corners specially 'joined'.
A corner and a foundation are specials symbol in the Temple of God.
…Two congregations of YAH, Genesis 32:2
Two silver trumpets in Numbers 10:2, that 'gather' the congregation at the door and for the 'journeying.'
Two clean birds for a sin/trespass offering, one associated with earth, another associated with wood, to cleanse a leper.
Leviticus 14:4, one used with'earthenware', the other used with 'wood.' Both symbols referring to stature in holiness relative to dispensation of the laws of God.
Two goats of sacrifice presented at 'door', Leviticus 16:8.
Two thresholds in Ezekiel 40:6/43:8, out which water issues to the wilderness in Ezek 47.
Two rivers in Ezekiel 47:9.
Two Bethlehems in scriptures; Micah 5, Joshua 19:15
Above all, Judah and Ephraim, i.e, Judah and Shiloah, one a lawgiver and another the strength/helmet of God's head. Psalm 60:7
Two doors with two leaves Ezek 41:24 ( c.f Isaiah 45:1 + Psalm 119 :19-22)
This is the characterisation of messiah by this chain, starting with the two stones in the Ark of the covenant.