The top three Democratic presidential candidates participated in a forum Monday on the connection between their religious faith and political positions. The unusual gathering, broadcast live by CNN, was co-hosted by Sojourners, a Christian social justice network. The Rev. Jim Wallis, editor-in-chief of Sojourners magazine, and an organizer of the forum, has been telling Democrats not to cede religion to Republicans. He has spoken at several Democratic Party retreats, teaching Democrats how to speak about faith. Sen. Hillary Clinton of New York, John Edwards and Sen. Barack Obama of Illinois mentioned faith in a generic way, baptizing their liberal politics...