An increasingly influential religious leader explains why evangelicals should worry less about abortion and gay marriage, and more about the poor.... Among the most prominent champions of a new evangelical agenda is Jim Wallis, the chief executive of Sojourners, a Washington-based organization that advocates for a Christian approach to social justice issues. Wallis began his activism in the civil rights and anti-war movements, and has long been a critic of the religious right, writing books, giving speeches, and publishing the Sojourners magazine to exhort Christians to pay more attention to the poor. But his profile increased dramatically with the publication...