Mary's extravagant offering produces interesting reactions. For her part, she is making an unvarnished, unfiltered offering of love to her savior. But what does Judas do? He does some quick calculations in his head and figures out that they could have really done some good if they sold that "wasted" perfume. He wasn't wrong. But he wasn't right either, because that wasn't what needed to happen at that time, and in that place. Worship isn't a waste of time. If we give Jesus much of ourselves, what we give is never cast away for no reason.