I wonder what is good for a spiritual journey? is it good to strictly adhere to a particular tradition and only following that or should it be holistic approach where experiences from different tradition can be assimilated in? I prefer the second one. Thats why I find it no diffcult to read Kabbalah, Buddhism, Veda or Upanisad to learn others great spiritual experiences and wisdoms. Since true spirituality has it source to the divine spark of Supreme Soul and it is common to every human soul, so the collective spiritual wisdom is certainly rich. In that regard it doesn't matter what is that person's external religious identity or culture.