The sacred verses of Sri Guru Granth Sahib Ji are called Gurbani, which means the Guru’s word or the song messages enshrined in Sri Guru Granth Sahib. In Sikhism, the Guru is the ‘Wisdom of the Word’ and not a human or a book. God revealed the Word through the holy men and women from time to time, and the most recent revelations were entered in the text of Sri Guru Granth Sahib.
To the Sikhs, any scripture not included in the Guru Granth is unacceptable as the Guru’s word or authority behind their theology, and it is not allowed to be recited, sung, or discussed in Sikh congregations with only exception for the compositions of Guru Gobind Singh, Bhai Gurdas and Bhai Nand Lal. These were considered to elucidate the Guru Granth verses.
Those who explain the scripture or teach the doctrines contained in the scripture are respected as teachers, granthi, missionaries, saints or enlightened souls in the Sikh religion.
The Sikhs regard Sri Guru Granth Sahib as a complete, inviolable and final embodiment of the message for them.
There is to be no word beyond the Word. And that’s how their last guru, Guru Gobind Singh, spoke to the congregation on October 20, 1708 shortly before his ascension.