Although many evangelicals may still be sharing QAnon content unwittingly, a new poll shows that the conspiracy theory has been gaining favor with Republican voters; 33 percent said they believe QAnon is “mostly true,” and 23 percent believe “some parts are true.”

That worries Seth Brown. QAnon adherents claim to be searching out a truth they insist has been diabolically hidden from the public. But evangelicals like Mr. Brown see Q’s quest for “truth” as deeply at odds with their most fundamental beliefs.

“Southern Baptists, and evangelicals more broadly, we care about truth, we believe God is truth and we believe his word is truth,” Mr. Brown told me. “We can’t compromise those beliefs or that witness for some wacky conspiracy theory whose followers claim to care about truth when they really don’t.”