BTS’ Love Yourself: Speak Yourself tour was selling out stadiums all over the world. Each night of the 20-date trek, which grossed $116 million, a total of nearly a million ticket buyers around the planet witnessed a thumping opening liturgy at the top of the K-pop band’s set in the form of the song “Dionysus.”As flames shot up from the stage, seven figures emerged in supplicant white amid Greek columns and a long altar.