The Gra on Bitachon

The only thing that we have is who we are.  The person who has Bitachon has something that he can take with him. The Gra says that the main reason that Hashem gave us the Torah was to bring us to have Bitachon.  To bring us to have an absolute trust relationship with Hashem.
from the Shiur:Trust in Hashem vs. Trust in People    Teacher: Rebbetzin Tziporah Heller
Class: Bitachon: Meaning of Trust