What does the light of Mashiach look like now that it's with us? What is the relationship of this light to Mashiach himself in terms of the different generations and to what he really is right now? Through performing the mitzvot, we are allowing the spiritual reality within us to expand and we are minimizing the physical reality. What is holiness? The essence of a sin is to lose holiness, whereas the essence of a mitzvah is to take it back.