Parshat Ki Savo begins with a description of the mitzvah of bikkurim: Each year, the farmers would bring their first (ripe) fruits to the Temple, where they would say a special prayer of thanks to G-d for giving them a wonderful crop. They would then give the fruits to a Kohen (Priest). This mitzvah teaches us the concept of Hakarat Hatov, appreciating all the Creator does for us.
Having completed teaching most of the laws to the Jews, Moshe focuses his attention upon their impending arrival in the Land of Israel. Moshe once again exhorts the Jewish people to remain faithful to G-d, who chose them to be His people from all the nations of the world. He teaches the Jews two mitzvos that they are to perform when they enter the Land of Israel. They are to inscribe the entire Torah on twelve large stones, in seventy different languages, sealing the writing with plaster. They are then to recite the famous ”blessings and curses” on Mt. Gerizim and Mt. Eival.
Moshe tells the Jews of the wonderful blessings that G-d promises to bestow upon them if they remain faithful to His Torah, and gives a chilling prophecy of what will befall the Jewish people if they do not. The Torah portion concludes with Moshe recalling the wondrous miracles that G-d had performed for the Jews during their forty years in the desert, and reminding them of the debt of gratitude that they owe the A-mighty.