With so many founding principles and themes in this Torah reading, we often don't focus on an interesting dynamic of these early Breishit/Genesis chapters: God is changing or determining the names of everybody in the nuclear Avram/Sarai family. Avram becomes Avraham. Sarai, his wife, becomes Sarah. It is God who determines the name of the child Hagar will bear to Avram (Ishmael) and it is God who determines the name of the child Sarah will bear to Avraham (Yitzhak/Isaac).
Anyone who has been blessed with the opportunity to name a child has felt a tremendous sense of responsibility. as well as promise for the future and the potential of this new life. There are so many elements we want to weave into the names we choose for our children: our hopes for their future; qualities we hope will be integrated into their personalities; channeling the memories and the love of relatives who have not lived to see and hold this new child . . . .
There is something endearing about this image of God as the "namer" in this family. Not since the Eden generation, has God claimed the role of "namer." Indeed, God tasks Adam, the human, with the task of naming much of creation. (Breishit 2:19 "And Adonay God fashioned from the ground every animal of the field and every bird of the skies and brought it to the human to see what Adam would call it. And whatever the human would call it, each living being, that would be its name.")
The fact that God has taken back the role of "namer" at this moment signals the uniqueness of the relationship with this family. Even though we first encounter Avram and Sarai with perfectly serviceable names, God wants to mark them with names of God's choosing. There is a sweetness in these acts of naming. We are witnessing God's hopes for each one of these family members, the qualities they will display, their relationships with God and with other humans, are all rolled into these new names: Avram as Avraham will establish many peoples to carry on the tradition of this new relationship with God; Sarai (meaning "princess") becomes Sarah . . . the meaning of her name does not change, but the letter "hei" added to her name is understood to represent the name of God, thus making her a partner in the covenantal enterprise; Hagar's son is blessed with the name Yishma-el, promising that God will hear him throughout his lifetime; Sarah's son is to be called Yitzhak which evokes the joyous (and incredulous) laughter of his parents as they contemplate his birth.
We and our Christian and Muslim friends in the "Abrahamic faiths" are the legacy of these four people, named by God. May we, too, embody those hopes of God to be treasure our common ancestry as the descendants of spiritual royalty, and be blessed with God's listening ear and bring joy to those who love us.