The secret Missionaries group is alleged to have numbered around 24,000 members across India. The origins of this brotherhood were reputed to be linked to one of the Magi at Christ's nativity and then the second century AD disciples of the apostle Thomas circulating in India. Nothing was heard of this evangelistic fellowship until William Carey began his missionary work in Serampore. The Maharishi of Kailas experienced ecstatic visions about the secret fellowship that he retold to Sundar Singh, and Singh himself built his spiritual life around visions.