We celebrate the Solemnity of the Immaculate Conception of Mary on Thursday, December 8. In this video from “Mary: A Biblical Walk with the Blessed Mother,” Dr. Edward Sri explains Mary’s Immaculate Conception and shows how this teaching is supported by Scripture. He describes how the Angel Gabriel’s greeting to Mary, “Hail, full of grace” (Luke 1:28), points to a deeper spiritual reality about her.