i'm kim walton.ou can follow us on twitter and facebook and watch us any time, anywhere on smart phones. that's much more on our web site including more of my interview with robb bell. you can comment and share them. audio and video pod casts are also available. join us at pbs.org. as we leave you, music from this week's passion of peace when president obama lit what is still known as the national christmas tree. ♪ ♪ ♪ >> major funding is provided by the lily endowment, an indianapolis-based private family foundation dedicated to its founders and christian religion, community development and education. additional funding also provided by mutual of america, designing customized, individual and group retirement products. that's why we're your retirement company. the estate of william j. carter, the jane hensen foundation and the corporation for public broadcasting.