On Visionary Experiences

Every visionary describes their spiritual visions from the vantage point of their culture and religion and closely-held beliefs. For example, most visionaries say all is One, but Zoroaster has his Ahriman and Christian mystics their Satan. For another, visionaries variously describe the Ultimate as pure light, pure love, or pure knowledge. For another, visionaries describe those who guide them in their visions as a dead friend, or a dead relative, or Virgil, or their guardian angel, or some arbitrary angel, or Jesus Christ Himself, or...

Is that not strange? Why should that be? Is not the spiritual experience universal?

I'm not sure it is. It seems to me that there's three points at which the perspective of a visionary might diverge:

1. We have no guarantee that different human souls, even those from the same part of this material world, go to the same segment of the spiritual world (which is much bigger than the material world).
2. Most mystical visions state that souls enter the world in order to grow. Different visionaries may therefore be at different "stages" of growth, and so have a different perspective on what they see during a vision, or even may be directed by their guides towards different experiences appropriate to their "stage" of growth.
3. All visionary experiences we have access to must be once again brought back down into the material world. This means that even a "pure" visionary experience must be remembered and described through the lens of the human vehicle, and thus may be colored by that vehicle.

Add it all up, and I might recommend one to either read widely about visionary experiences from different cultures and religious viewpoints so one can compare and contrast them, or else avoid them entirely and focus on one's own experiences exclusively.