What does it mean to be enlightened? How do l know if someone is really enlightened? What are the aspects of the knowledge required to attain it. From the Bhagavad Gita and other authoritative Vedic texts, we can understand that there are 3 levels of understanding , regarding enlightenment. One being perfect, the next being more perfect, and the third being completely perfect . To be fully enlightened means to know all 3. Being enlightened refers to having knowledge of the Absolute Truth, The Original Cause or God, as he is referred to. He is known by 3 different aspects, which then differentiate, a persons level of understanding, relationship and knowledge.