In this shiur, delivered in Ba'er Miriam (over Bein HaZmanim), Rav Burg explains the inner nature of the rechush gadol (great wealth) that Avraham Avinu was promised during the Bris Bein Habesarim. Why do we care about wealth? Why is it stressed over and over again in the story of Yetzias Mitzrayim? We are sent down into this world to collect the 288 sparks that fell down into this world from the Olam HaTohu. When we use this world to serve Hashem we collect the remaining sparks and finish leaving Mitzrayim.