Tim Tebow is an evangelical icon. Christian young people read his books, buy his jersey, and flock to his games. It is the evangelical sports fans that cause ratings and readership to rise every time he is featured in a game or a story. Countless churches, Christian gatherings, and evangelical leaders have traded on his name and presence in order to draw crowds and media attention. Our sons want to be like him and our daughters want to marry him. But now Tebow is under serious attack.

Last week a sports firestorm erupted when the secular press became aware of Tebow’s impending speaking engagement at the First Baptist Church in Dallas. Pastor Robert Jeffress is known for being outspoken on prominent social issues, and he has a history of leveraging controversy to...