The Assumption of Mary into Heaven (often shortened to the Assumption) is, according to the beliefs of the Catholic Church, the bodily taking up of the Virgin Mary into Heaven at the end of her earthly life. The Catholic Church teaches as dogma that the Virgin Mary "having completed the course of her earthly life, was assumed body and soul into heavenly glory". Pope Pius XII pointed to the Book of Genesis (3:15) as scriptural support for the dogma in terms of Mary's victory over sin and death through her intimate association with "the new Adam" (Christ) as also reflected in 1 Corinthians 15:54: "then shall come to pass the saying that is written, Death is swallowed up in victory". The New Testament contains no explicit narrative about the death or Dormition, but several scriptural passages have been theologically interpreted to describe the ultimate fate in this and the after world of the Mother of Jesus. The Catholic Church itself interprets chapter 12 of the Book of Revelation as referring to it.
The Solemnity of the Immaculate Conception celebrates the solemn celebration of belief in the Immaculate Conception of the Virgin Mary. It is universally celebrated nine months before the feast of the Nativity of Mary, which is celebrated on September 8. The Immaculate Conception is one of the most important Marian feasts in the liturgical calendar of the Roman Catholic Church, and is celebrated worldwide.