Yosef represents the hidden love of Hashem:
Every single Jew contains a hidden love of G-d within his soul. This love is nurtured to one’s soul through Yosef Hatzadik. Yosef collected all the money of the world and hid it into three treasures. Spiritually, this represents the hiding of the love of G-d within the soul. On this the verse states Or Zarua Latzadik, that the light of G-d, which is Chesed, and love, is hidden in the Tzaddik, in Yosef Hatzadik, and from there is planted in the G-dly soul.
 Torah Or Vayigash 44a-b