Your original point was that the Commandments had to be written by whatever language Moses would have chosen to use. My point was that that was not the case - they were written by God and he was not limited by Moses. They may have been carved in emojis for all we know. Why did God go to the trouble of writing the first set if he knew darn well that Moses was just going to break them?
Why would he create a certain Cherub or angel if He knew He would rebel against Him? Good luck answering both that and your question.
Secondly, since we don’t know what language specifically the Ten Commandmebts were written in, and I gave options in the title, you do at least understand that God would know what languages Moses knew so it stands to reason He would etch the 10 commandments with a language that Moses would know and be able to continue using for the Torah.
So based upon that it is either God etched in an unknown language or more likely would use a language Moses knew when he wrote the Torah (that God also gave Him) and that Moses would understand the moment Moses looked at the tablets..
So since Paleo Hebrew stretches back to Proto Sinaitic and there would be Egyptian Hieroglyphics before that, I imagine it’s one of the two or something in between.
The Ten Commandments were given three times. The first time, the Ten Commandments were first spoken by God in Exodus 20.
The second time, they were given to Moses on two tablets of stone, in Exodus 31. These were the tablets that Moses broke after seeing Israel build and worship a golden calf.
The third time, in Exodus 43, God gives Moses a second physical set on stone. "The LORD said to Moses, "Chisel out two stone tablets like the first ones, and I will write on them the words that were on the first tablets, which you broke."
Why would God present the Ten Commandments three times? In the first presentation, God gives Israel his law by the spoken word. They of course accept it as their law, not knowing they cannot keep it.
The second time, the law is written on two solid stones. When the stones reach the people of Israel, they are caught worshiping a golden idol, and playing in sexual immorality. These stones are broken by Moses. This represents Jesus Christ dying for our sins.
The third set of Ten Commandments were again written on stone. This time, they are placed inside the Ark of the Covenant. The Ark was a wooden box, overlaid with gold, and placed in the temple. This represents Christ, now in heaven, in the temple.