Exodua 34

 We read in Exodus that - 

"...the Lord said unto Moses, Hew thee two tables of stone like unto the first: and I will write upon these tables the words that were in the first tables, which thou brakest."  (Exodus 34:1)

We learn thought that He clarified more with the Joseph Smith Translation - 

" And the Lord said unto Moses, Hew thee two other tables of stone, like unto the first, and I will write upon them also, the words of the law, according as they were written at the first on the tables which thou brakest; but it shall not be according to the first, for I will take away the priesthood out of their midst; therefore my holy order, and the ordinances thereof, shall not go before them; for my presence shall not go up in their midst, lest I destroy them. 

2 But I will give unto them the law as at the first, but it shall be after the law of a carnal commandment; for I have sworn in my wrath, that they shall not enter into my presence, into my rest, in the days of their pilgrimage. Therefore do as I have commanded thee, and be ready in the morning, and come up in the morning unto mount Sinai, and present thyself there to me, in the top of the mount."  (JST 34:1-2). 

Probably the translators had no idea what this meant.