How do we know if any guru or any scripture is truth?
First of all, a 'Guru' must have credibility. A couple of examples of gurus or self-proclaimed gurus who lost all credibility: Osho and Kryiananda. Credibility is defined by a set of conditions which must be satisfied
My credibility i put at a high premium. Anyone who watches my films will know that. Just follow me mccoy and you will never be left astray. I have great plans for you and your house. We will make it into a Horror Amusement Park. OSHO governs workers safety. I will be your GURU and lead you from the harsh light of day to the mellow horror of night. All these other Gurus you speak of we can make Halloween masks for them to celebrate the dark days ahead.