There is an inner divining sense that felt the presence of a Being who is the ultimate Source, the supreme Mystery. Aswapati is about to enter this secret sanctuary.
The Supermind was established in Sri Aurobindo but it had not transformed his body. To put it precisely, he did not have a supramentalised body and that is why he could undergo death.
"... the storm may pass over the world without being able to destroy this great hope of the near future; that the tempest may not sweep away this beginning of realisation."
This is in response to a comment by a fellow devotee that due to our short life span when we realize our goals and learn a few things about life, the time is up to leave the body and start afresh.