Sikhism, religion and philosophy founded in the Punjab region of the Indian subcontinent in the late 15th century. Its members are known as Sikhs. The Sikhs call their faith Gurmat (Punjabi: “the Way of the Guru”). According to Sikh tradition, Sikhism was established by Guru Nanak (1469–1539) and subsequently led by a succession of nine other Gurus. All 10 human Gurus, Sikhs believe, were inhabited by a single spirit. Upon the death of the 10th, Guru Gobind Singh (1666–1708), the spirit of the eternal Guru transferred itself to the sacred scripture of Sikhism, Guru Granth Sahib (“The Granth as the Guru”), also known as the Adi Granth (“First Volume”), which thereafter was regarded as the sole Guru. In the early 21st century there were nearly 25 million Sikhs worldwide, the great majority of them living in the Indian state of Punjab.