" Shabda, Transcendent Word, or logos ( λόγος ) in Greek, is the exclusive means by which transcendent truths are revealed. This is the case because shabda, being of the nature of the spiritual, corresponds in essence with the spiritual nature of transcendent truths. It is only via consciousness that we can know consciousness. It is only via spirit that we can know Spirit. It is only via atman (our individual soul) that we can know Brahman (God). It is only through shabda that we can know transcendent truths. Shabda represents the essential nature of spiritual realities as they exist in the form of trans-empirical vibrational frequency (thus Word, logos, etc.). Truth, being an eternal and living reality, can be accessed by human beings who have purified themselves, and who have absorbed their subjective consciousness in the Absolute supreme subjective consciousness (God), to such a degree that qualitative separation between themselves and God has ceased to exist. At this point, the medium (pramana) between knower (pramatr) and object of knowledge (prameya), which in this case is God, has evaporated. Thus, shabda is the only means of knowing in which we transcend even the use of a medium.
In such a state of oneness with the Divine, the sage now has the ability both to know the transcendent truth, as well as to reveal the transcendent truth of the Divine for all the world to know. Thus, Veda, or perfect scriptural authority comes into being as a result of such direct, non-mediated insight into the nature of the Divine on the part of the sage. Word, as the eternal transcendent reality revealed to sages in deep states of meditative absorption (samadhi), becomes "the Word" as written scripture when these very same sages then write their realizations down. "
― , Sanatana Dharma: The Eternal Natural Way