The void can mean empty space.
To become one with the void is to become undefined,
i.e. to shed all ego definitions and attachments.
This is a necessary process in
rebirth.
It is best done at the end of a lunation,
as the waning moon supports the release process,
with the last week to half week of a lunation
matched by the menstrual cycle of release,
forgiveness, and voiding of previous creations.
Faery blessings -- celeste