...Historians may remember Obama as the nation’s first black president, but he’s also a religious pioneer. He’s not only changed people’s perception of who can be president, some scholars and pastors say, but he’s also expanding the definition of who can be a Christian by challenging the religious right’s domination of the national stage. Obama is a progressive Christian who blends the emotional fire of the African-American church, the ecumenical outlook of contemporary Protestantism, and the activism of the Social Gospel, a late 19th-century movement whose leaders faulted American churches for focusing too much on personal salvation while ignoring the...