Jane Roberts was not like Blavatsky, nor Bailey, She Spoke for "Seth" (Seth Spoke for All-That-Is)

Seth is a energy personality essence spiritually existing outside of the physical universe playground for designed for soul-growth and for weeding-out the lazy and the unworthy, wicked fragments. The loving souls are upon the path to worthiness and eventual an entity-ship to take a place within All-That-Is.
Luciferians and Mystery School thUgs are good examples of those found "unworthy" of their automatic eternal-validity... they wither away their own souls through murderous-intentions.

What is All-That-Is?
Seth describes All-That-Is in the Sethbook :
https://www.youtube.com/watch?v=JuFk5SlxUr8&list=PLPDTOFbrYdqC2xnGCN0mqOvwCrWtPPtTN&index=1

"Dreams, Evolution and Value-Fulfillment"
Chapter 1: Session 882, September 26, 1979

"I will purposely avoid using the word “God” because of the connotations placed upon it by conventional religion. I will make an attempt to explain the characteristics of this divine process throughout this book. I call the process “All That Is.” All That Is is so much a part of its creations that it is almost impossible to separate the “creator from the creations,” for each creation also carries indelibly within it the characteristics of its source.

[... 1 paragraph ...]

I am not saying that the universe is the result of some “psychological machine,” either, but that each portion of consciousness is a part of All That Is, and that the universe falls together in a spontaneous, divine order (intently)—and that each portion of consciousness carries within it indelibly the knowledge of the whole."