According to Rashi, Moshe Rabbeinu begins our Parsha R’ei by informing the B’nei Yisrael about the blessing and the curse to be pronounced to them upon their entry to Eretz Yisrael from Mount Gerizim and Mount Eval.
Moshe Rabbeinu continues his mussar saying:
“Behold, I set before you … a blessing and a curse; the blessing if you heed the commandments of Hashem, and the curse, if you will not observe his commandments. (Sefer Devarim, Perek 11, posukim 26-27)
Toward the end of the parsha, we are informed: [...]