When divine truth appears ignorance leaves just as darkness is replaced by light. We become illumined or enlightened. And so the small piece of information from https://www.himalayanacademy.com/, where Satguru Bodhinatha Veylanswami cleared the air on the 3 Malams or Impurities that cover us, namely Maayai, Kanmam, and Aanavam. When we come to accept that Maayai exists but is constantly changing we have passed the first phase. When we come to accept that Kanmam or Karma exists and begin working on it we stand at the second phase. Aanavam that identifies us as separate from the One or Yegan when dropped ends it all. The purpose of coming here is achieved.
The One comes in human form to guide man ridden with the 3 Malas to move to the second phase. The One comes as Shiva to the one in the second phase. He in turn guides those waiting to cross over. Meanwhile, he moves up into the final phase where the One comes within to teach. With the descent of the One, he becomes one with him. He loses his individuality.