""...and by thy seed shall all the nations of the earth bless themselves" (Bereishith 26:4).
In this week's Torah portion, God assures Yitzhak that the nations of the earth will find blessing in his descendants. God had made a similar statement to Yitzhak's father, Abraham; and later makes this statement to Yitzhak's son, Yaacov. The children of Abraham, Yitzhak and Yaacov--the people of Israel--have a special destiny. They live not only for themselves and their immediate families; rather, they live for the benefit of all humankind.