In light of this, we can understand the choice of oil as a metaphor for Chassidus. Oil has two distinctive qualities: it does not mix with any other liquid and it can penetrate all matter. The same is true of the teachings of Chabad Chassidism. It reveals the essence of our souls, the highest of our potentials. The Alter Rebbe's contribution enables this potential to influence and affect the functioning of all our powers, and thus be expressed in every aspect of our lives.
Moses prostrated himself and kissed Yisro: Moses embodied Divine wisdom, whereas Yisro embodied natural, worldly wisdom. By bowing down to Yisro, Moses elevated natural wisdom and accepted it into the sphere of Divine wisdom. This, as we have seen, was a prerequisite to the Giving of the Torah.
