The Sathya Sai Baba movement is a new religious movement inspired by South Indian Hindu guru Sathya Sai Baba who taught the unity of all religions. Some of his followers have faith in his claim to be a purna Avatar (full divine incarnation) of Shiva and Shakti, who is believed to have been predicted in the Bhagavad Gita. This means that some of his followers see him as a God. Devotees engage in singing devotional songs called "bhajans" and selfless service (seva). Its official organization is the Sathya Sai Organization. However the Sathya Sai Baba movement extends beyond the organization. An important aspect of the faith of adherents is the miracles attributed to Sathya Sai Baba. The number of adherents is estimated between 6 and 100 million.