In the chapter Ki Savo it states: "When you will enter the land," this is a reference to the Future Redemption when every Jew will enter the Holy Land. And upon entering that land, the Jews will surely conduct themselves in a manner which will emphasize the holiness of that land and its connection to the Jewish people.
And from Eretz Yisrael, the Redemption will spread throughout the world at large, granting a good and sweet year not only to the Jewish people, but to all nations. And there will be peace and brotherhood among nations as the prophet declared, "Nation will not lift up sword against nation." And the world will reach an ultimate state of fulfillment when there will be no more war and G-dliness will be drawn down to every creation in the world.
The coming of this state will be hastened by the Jews' efforts to prepare themselves to greet Moshiach, studying about his coming and anticipating his coming at every moment. And with his coming, it will be revealed how "G-d rules forever and ever," how He is the true King of the world and grants every person a kesivah v'chasimah tovah for a good and sweet year in the year to come.
Jews and gentiles alike should spread goodness in their surroundings. And this begins by doing a favor for another person and in this way, conducting oneself in a manner which brings joy and satisfaction to his parents.
And when this process is carried out throughout the world at large (the Jews in their portion and the gentiles in their portion), the Jews will gain full control of Eretz Yisrael. And this will lead to the entry of the Jewish people into Eretz Yisrael and into the fundamental element of Eretz Yisrael, the Beis HaMikdash.
As our Sages mention that in the Era of the Redemption, "Eretz Yisrael will spread out into other lands." Just as Eretz Yisrael is unique in that sacrifices can be brought from there to G-d, similarly, the entire world will be made suited for such service. This will come about because every created being -- Jews, gentiles, animals, plants, and even inanimate objects -- will add more life and more fulfillment in his surroundings.
From a sicha said on 17th of Elul, 5751