Albert Barnes Commentary Deuteronomy 27:1

"And Moses and the elders of Israel commanded the people, saying, Keep all the commandment which I command you this day." — Deuteronomy 27:1 (ASV)

Moses, in a third discourse (Deuteronomy 27–30), proceeds more specifically to dwell upon the sanctions of the Law. In these chapters, he sets before Israel, in striking and elaborate detail, the blessings that would result from faithfulness to the covenant and the curses that disobedience would involve.

Deuteronomy 27:0 introduces this portion of the book by commanding the erection of a stone monument on which the Law should be inscribed as soon as the people took possession of the promised inheritance (Deuteronomy 27:1–10), and by next prescribing the liturgical form according to which the blessings and curses should be pronounced (Deuteronomy 27:11–26).