Embedded in this week’s Parsha, Lech Lecha, is Avram’s asking Hashem (G-d) “how will I know that I will inherit it (the land)?” This seems strange, because Avram was already promised that he would have children, and that his children would be as many as the stars. If he believed G-d about having children (which would be a great miracle at his age), why would he need reassurance about a much less miraculous promise of inheriting the land?
The Sforno explains that Avram had no doubt that he would have children, and that they would inherit the land. What he needed reassurance about what his concern that his children might forfeit their future by faltering, because unlike the stars, they would be living among temptations and impurities. G-d’s response is “you shall surely know” that they will indeed rise above their struggles. How? Rashi (commentary) says because of the Korbanot (sacrifices) that they will bring. The root of the word Korban means “close”, which lends great insight into giving: The more we sacrifice to others, the closer we are to them. If we give to each other, despite our surroundings, we are assured of inheriting a prosperous and fulfilling future.