In Peru's capital, a group dressed in biblical-style robes, veils and sandals gathered one recent Sunday night to celebrate an unlikely victory: their congregation had overnight become a major force in Congress.

One by one, a dozen of those who had run for office paraded on stage, thanking their "master" and party president, Ezequiel Jonas Ataucusi Molina, who is sometimes revered as a god.

"In 2021, our master will be president!" proclaimed Esther Yovera, alluding to the presidential election next year.