You cite the verse in Devarim 10:1 - 3. I'm wondering since this tzivui is post shivrei Luchos, what was the original intent for the first Luchos ie was there a tzivui for an aron for those? What would have happened to them if they had not been broken... I'm wondering what role they would have played...
jon, bklyn ny
The Ramban (Al ha'Torah Devarim 10:1) answers that Hash-m knew that the Luchos Rishonos were destined to be broken, so he did not command Moshe to make a box for them.
The Or ha'Chaim explains that the Luchos Rishonos did not need an Aron since they were on a higher spiritual level.
Dov Freedman