Guru Nanak Dev Ji has said that ‘As the Bani of Vaheguru comes to me, so do I make it known to everybody.’ Gurus have said that Gurbani is a revelation and it is stated many times in Gurbani. One of the clearest examples is a Shabad of Guru Ram Das Ji where They say, ‘O’ Sikhs of the Guru, accept the Bani as truth upon the truth because Vaheguru is making these words come out of my mouth.’ Guru Gobind Singh Ji also said, ‘I don’t say these words, these are all your (referring to the Divine) words that you make me say.’ So, Gurbani is a revelation from Vaheguru directly given to us.