Question: Can a person's body and consciousness so change during his lifetime that he becomes fit for a finer soul to enter him?

Sri Chinmoy: A finer soul does not enter him. But if the person's body and consciousness are transformed totally, then the soul that he already possesses will be in a position to fulfil its Divine Mission here on earth most effectively, in all its supernal, detailed perfection.

Question: Does a change, such as purification, during the lifetime, change the soul?

Sri Chinmoy: It is the same soul which accepted ignorance and now, throwing away the veil of ignorance, comes closer to its own Divine plenitude and Divine Manifestation.

From:Sri Chinmoy,AUM — Vol. 2, No. 6, 27 January 1967, Boro Park Printers, Brooklyn, New York, 1967
Sourced from https://srichinmoylibrary.com/aum_17