H'shem related to Yehoshua, after the soul leaves the body it takes on the form of an angle. "If it was purified and radiant and its deeds were good in this world,...He would let him walk among those who stand here (Olam Haba):"
pg 435/ 437
Nefesh Hachaim
As profound as the teachings are of the Avos one must proceed cautiously as he would towards burning coals. Their knowledge was so deep that one could get burnt if he would get too close.
Gate Three Chapter 1 pg 107/108