The Second Vatican Council says about Sunday, “The Lord’s day is the original feast day … Other celebrations, unless they be truly of greatest importance, shall not have precedence over the Sunday, which is the foundation and kernel of the whole liturgical year” (Sacrosanctum Concilium, n. 106). As you have seen, on Sundays we never celebrate Saints; today is an exception, because it is a celebration of greatest importance. Is Saint John the Baptist more important than others Saints? Yes, it was Jesus himself to say so, “Among those born of women there has been none greater than John the Baptist” (Mt 11:11). He is, among the Saints, the only one of whom we celebrate the birth. Usually, we celebrate the Saints on their dies natalis, that is, on the day of their death, which is also the day of their “birth” into eternal life. We cannot celebrate their earthly birth, because, when they were born, they still had the original sin. On the contrary, we celebrate the nativity of Jesus and Mary, because, when they were born, they were in the state of grace, as the former was the Son of God and the latter had been conceived without sin. Why do we also celebrate the nativity of John the Baptist? He neither was the Son of God nor had been conceived sinless. But he had been sanctified before being born. We believe that, when Mary, pregnant with Jesus, visited Elizabeth, expecting John, this one was sanctified by the presence of the Savior. We find a hint to this event in the first reading, “The Lord called me from birth, from my mother’s womb he gave me my name.” And then the angel said so to Zechariah, “He will be filled with the Holy Spirit even from his mother’s womb” (Lk 1:15).