What is the only one truth for the soul?

There is only one truth for the soul, and that truth is union with the Light whence it originated. 

You incarnate in matter to experience it, and then you return to the Source or Cosmic Oversoul. 

That is all. 

But to return to the Source, you must be purified from contact with matter. 

If you can accomplish this after one existence, that is perfect bliss―but it is rare. 

Most of the time, the soul must incarnate several times before it is completely free of corruption. 

To experience matter fully, it must be divided in two halves―male and female. 

That is its true essence. 

To return to the Source, both halves must be purified, and united beforehand.

Migene Gonzalez-Wippler, What Happens After Death―Scientific and Personal Evidence for Survival, Part Two―Kirkudian, Chapter Eight, Verdigris, pp. 213 - 214, Llewellyn Publications, 1997