At Congregation Beth Shalom of the Blue Hills I sit by the gallery’s fireplace with Lila Rosenbaum, 86. Sunshine warms our backs from the wall-high windows and she speaks of finally “having a home.”The 9,500 square foot temple is tucked to the side of an open field by a stand of old growth trees and built on 1.9 acres of land donated by members Marvin and Andrea Gordon.