If we are all part of the God then why did we came to this world ?

Question: I request you to please answer my basic question on spirituality: If we are all part of the God then why did we came to this world ? Our present state is according to our karma of last life. then I want to KNOW is at the first time why did we came here? Before that what is the our state ? and after getting Mukti what will be our state?

Answer: It is an age-old question. The answers are many. The one answer given by Vedanta is that the world itself is an illusion and when we realise our real nature, the illusoriness becomes clear. But, so long we are in illusion, the illusoriness can not be realised. Just as so long we are in dream, we are not aware that we are in dream.
The law of Karma is true, but, the Creation is like a circle, which has no beginning. We have come from God, and go back to God ultimately, when the play is over. We don’t realise that we have come from our God – this is our ignorance.