When Brahmachari Vrajvihari Sharan led his first worship service in his new job as a Hindu chaplain Sunday, he knew his audience. As the service began, he asked worshipers to clear their minds. “Close all the tabs that are open, just as you would do to a Firefox window,” he said. The comparison — of a spiritual mindset to an Internet browser — worked at once. More than 40 college students, many of whom had been up until 3 a.m. the Saturday night before this 9 a.m. service, chuckled appreciatively and fell into a reverent silence. This is Sharan’s new...