You are correct, we are in the same boat. Everyone has a Freedom of Choice to cooperate intellectually or fight over material posessions.
You are also correct that all races have equal potential. You have the Freedom of Choice to choose to reincarn as a Jew or a Nepalese but remember that your parents also have their Freedom of Choice. They have to choose YOU.
What is the "origin" of the astral body? Most oscillations of the astral body electrons are local to Earth. Note, that the most important in the astral body is the encoded INFORMATION. This information can be copied, modified, distorted, abused, etc.. and yes, you may say that some of it originates from Hebra.
Several thousand years ago, Jews were slaves and made very different choices than they make today, both individually and collectively. They stood united in the face of adversity and used "the power of inertia" to resist oppression, which was quite unique on Earth at that time. That is why they were "chosen" to be helped.
Today Jews seem divided - they are almost fighting each other.