And it shall be, when Hashem your God brings you into the land that you are entering to possess it, that you shall place the blessing upon Mount Gerizim and the curse upon Mount Eival.
English: “And it shall be when He brings you” — It was taught: “And it shall be” means immediately. “When He brings you” — perform this mitzvah, for in its merit you will enter the Land.
On the daf / in context: The language teaches that the ceremony of the blessings and curses on the two mountains is to be performed at once upon entering the border of the Land, and that the merit of this mitzvah itself helps bring about the conquest of the entire Land.
Type of Learning
Derash on the verse (Sifrei / Bavli) — temporal immediacy of “vehayah” and reward of the mitzvah for entry into the Land.
What Is Learned
The mitzvah of placing the blessing and the curse on the two mountains is to be performed immediately upon entry, and its merit assists the conquest of the Land.