A group of bloggers seeking reform in Southern Baptist circles recently decried pastor Rick Warren for teaching that God communicates to believers via dreams. The bloggers named Warren and other speakers at a 2015 Hillsong conference “heretical preachers that claim extra-biblical revelation from God.” To be sure, the nature of God’s revelation has been debated throughout church history, and overemphasis on dream interpretation can be theologically dangerous.

Elsewhere, a UK Christian leader has devoted much of his writing and teaching to criticizing Christian Zionism—the belief that the founding of the State of Israel is foretold in Scripture. He and others have begun calling Zionism and its political implications “heresy” in online columns. And their views are not unique: Many Christians believe that Zionism is a misreading of God’s promises throughout the Old Testament.

But are these problems of heresy? Both complementarian and egalitarian leaders have taken to the Internet to call each other’s views on gender and leadership heresy. That, though their respective movements have officially existed for about 30 years.

Some say the Internet has democratized knowledge. Clearly, it has also democratized theologizing. Anyone with a computer and Wifi access can publish their thoughts and declarations onto a level pixelated playing field. Some blogs and Twitter accounts exist solely to cry foul whenever a well-known preacher makes a controversial statement.

Yet the frequency and volume of the proclamations from these sources—and from those who share and retweet them—suggest that some Christians don’t understand the significance of right doctrine, or the gravity of heresy ...

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