“Command the children of Israel, and say to them: For you are coming to the land of Canaan; this will be the land that will fall to you as an inheritance, the land of Canaan according to its borders” (Numbers 34:2). “Command the children of Israel, and say to them: For you are coming to the land of Canaan; this will be the land that will fall to you as an inheritance” – it teaches that the Holy One blessed be He showed Moses everything that had been and is destined to be.
He showed him that Samson would emerge from Dan; Barak son of Avinoam, from Naphtali; and likewise, each and every generation and its expounders, each and every generation and its judges, each and every generation and its leaders, each and every generation and its transgressors, each and every generation and its righteous men, as it is stated: “The Lord said to him: This is the land regarding which I took an oath to Abraham, to Isaac, and to Jacob, saying: To your descendants I will give it; I have let you see it with your eyes” (Deuteronomy 34:4) – it teaches that He showed him Gehenna.4See Sifrei, Devarim 357, which states that God showed Moses Gehenna.
Moses said: ‘Who is sentenced in it?’ He said to him: ‘The wicked and those who betray Me,’ as it is stated: “They will emerge, and they will see the corpses of the people [who betray Me]” (Isaiah 66:24). Moses began fearing Gehenna. He said to him: “I have let you see it with your eyes, but you will not cross into there” (Deuteronomy 34:4).
What is, “this is the land [regarding which I took an oath to Abraham, to Isaac, and to Jacob], saying”? The Holy One blessed be He said to him: ‘Go and say to Abraham, Isaac, and Jacob: The oath that I took to you, I have fulfilled for your descendants.’ That is why “saying” is stated.