Names are more than convenient labels; going by your Jewish name is a statement of pride in your Jewish heritage. The Jews of ancient Egypt, tradition tells us, kept their Jewish names. That’s one of the ways they remained a cohesive people and merited redemption.
There’s more: Your Jewish name is the channel by which life reaches you from Above. In fact, the Kabbalists say that when parents name a child, they experience a minor prophecy—because, somehow, that child’s destiny is wrapped up in the combination of Hebrew letters that make up his or her name.
Granting a name in the presence of the Torahinfuses the name with blessing
A girl gets her name at the Torah reading in the synagogue. The rabbi or Torah reader recites a prayer for the health of mother and child, and the father provides the name that the parents have chosen. Since the Torah is the source of all good things, granting a name in the presence of the Torah infuses the name with blessing.
A boy is named at his brit milah (circumcision), when he enters into the covenant of Abraham and becomes a full-fledged member of the Jewish nation.