Unlike many figures of the Evangelical and Religious Left, Ron Sider of Evangelicals for Social Action (ESA) has sustained an integrity that many conservatives have grudgingly admired. Unlike many of his activist cohorts, he has not prevaricated on Christian teachings about sex, marriage, or abortion. And unlike many of his fellow religionists on the left, Sider has maintained a rigorous concern for the global persecution of Christians when others prefer silence over criticism of Islamist or communist regimes.

Now Sider, as he nears retirement from 40 years as ESA founder and head, has again distinguished himself by dissenting from the Religious Left on the untouchable sacredness of the federal welfare and entitlement state. Sider has very publicly resigned from the Association...