The press often describes the Rev. Robert Jeffress, pastor of Dallas’s First Baptist Church, as President Donald Trump’s “spiritual adviser,” and a brief glance at the reverend’s resume helps explain why the two get along so well.

Now a frequent Fox News guest, Jeffress rose to national prominence in 1998, when he was pastor of the much smaller First Baptist Church in Wichita Falls, Texas. There, he led a campaign to remove two gay-friendly children’s books, Heather Has Two Mommies and Daddy’s Roommate, from a local library, eventually pressuring city council to move them to the adult section — an order a court later ruled violated the constitution.

Jeffress’s crusade against children’s lit increased the membership at his Wichita Falls church and helped him secure his ministerial appointment in Dallas. From this more influential pulpit, Jeffress has predicted that LGBTQ rights activists “will pave the way for that future world dictator, the Antichrist, to persecute and martyr Christians without any repercussions whatsoever.” He characterized the Supreme Court’s 2015 Obergefell v. Hodges decision, which declared laws banning same-sex marriage unconstitutional, as “the greatest, most historic landmark blunder in the history of the United States Supreme Court.”