This is a Feast of Our Lady celebrating that she was preserved from every stain of sin. She is Mary Immaculate, but she is also a Mother who is watching over each of us with a tender, constant love.
Father Alfred Delp said that "Mary is the most comforting figure of Advent. That the angel's message found her heart ready and the Word became flesh,...that God would become a mother's son and that a woman could walk upon this earth, her body consecrated as a holy temple and tabernacle for God, is truly the earth's culmination and the fulfillment of its expectation."
Mary is always seeking ways to console us, to help us, to bring us to her Son. Let us honor her today.