 It's that Mary, from the first moment of her existence, was completely full of God's grace and was free from the stain of original sin. If she's full of God's grace, that means that sin has nothing to do with her. And there's another Marian teaching of the church. It's one of the four Marian dogmas or defined teachings that you have to believe in order to be Catholic. The Immaculate Conception, the perpetual virginity of Mary. That's in here, too. We're going to look at that in a second.