Adam Clarke on Deuteronomy 27:3

All the words of this law - After all that has been said by ingenious critics concerning the law ordered to be written on these stones, some supposing the whole Mosaic law to be intended, others, only the decalogue, I am fully of opinion that the (תורה torah) law or ordinance in question simply means the blessings and curses mentioned in this and in the following chapter; and indeed these contained a very good epitome of the whole law in all its promises and threatenings, in reference to the whole of its grand moral design. See at the end of this chapter, Deu 27:26 (note).