Lent is, of course, a penitential season, but Advent is as well. We get in touch with our sinfulness during Advent precisely because we want to prepare ourselves for the coming of a Savior. If there is nothing to be saved from, then there is no point in rejoicing at the arrival of Jesus the Lord. The prophet Isaiah offers us a number of powerful images for sin in our first reading for this Sunday. It behooves us, as an Advent spiritual exercise, to meditate on them.