Last week, the conservative broadcaster Glenn Beck called on Christians to leave their churches if they heard any preaching about social or economic justice because, he claimed, those were slogans affiliated with Nazism and Communism.

This week, the Rev. Jim Wallis, a liberal evangelical leader in Washington, D.C., called on Christians to leave Glenn Beck.

"What he has said attacks the very heart of our Christian faith, and Christians should no longer watch his show," Mr. Wallis, who heads the antipoverty group Sojourners, wrote on his "God's Politics" blog. "His show should now be in the same category as Howard Stern."

Mr. Beck, in vilifying churches that promote "social justice," managed to insult just about every mainline Protestant, Roman Catholic, African-American, Hispanic and Asian congregation in the country -- not to mention plenty of evangelical ones.

Even Mormon scholars in Mr. Beck's own church, the Church of Jesus Christ of Latter-day Saints, said in interviews that Mr. Beck seemed ignorant of just how central social justice teaching was to Mormonism.