Musar su I Re 12:29

Perhaps we can best explain this with the help of the Zohar (Sullam edition Vayechi 229) on Jacob's blessing in Genesis. According to this Dan displayed the characteristics of a serpent during the reign of Jerobam. The stress on the words "on the way" in that blessing is a reference to Kings I 12,29 where it is reported that Jerobam placed one of the two golden calves [designed to deter the Israelites under his rule from making their pilgrimages to Jerusalem. Ed.] on the principal highway in the territory of Dan. This means that Dan became a hindrance, a stumbling block to Israel's serving G–d (like a serpent, another word for idol-worship). When the time came for Moses to bless the people and he saw Dan in his mind's eye coiled up like a snake, he decided to connect Dan with the lion, the symbol of חסד. The first of the flags the Israelites had in the desert featured the picture of a lion. When the Israelites assumed marching order, Yehudah was the leader of the first army group whereas Dan was the leader of the rearguard. Moses described Dan as a lion in order to symbolize a close relationship between the leading camp and the last camp. Thus far the Zohar.