The feast day on which Christians celebrate the birth of Jesus; also refers to the liturgical season that immediately follows Christmas Day.

The twenty-one Churches of the East, with their own theological, liturgical and administrative traditions, in union with the universal Catholic Church and her head, the Bishop of Rome.

A feast day celebrating the visit of the Magi to the infant Jesus and the revelation of the Savior to the Gentiles. Originally celebrated on the twelfth day of Christmas (January 6), it is now celebrated on the Sunday between January 2 and January 8th.

Traditionally, the span of forty days (excepting Sundays) between Ash Wednesday and Easter Sunday. In the official Church calendar, It begins with Ash Wednesday and ends on Holy Thursday evening with the celebration of the Mass of the Lord's Supper. It is followed by the Triduum, the three days of the Lord's Passion, death, and Resurrection. It is the season during which believers focus on conversion, turning towards God more completely in their lives.

The Church's annual cycle of religious feasts and seasons that forms the context for the Church's worship. We remember and celebrate God the Father's saving plan as it is revealed through the life of his Son, Jesus Christ.

The Church's official, public, communal prayer. It is God's work, in which the People of God participate. The Church's most important one is the Eucharist, or the Mass.

The Church's living teaching office, which consists of all the bishops, in communion with the Pope.

The time in the liturgical year that is not part of a special season like Advent, Christmas, Lent, or Easter.

The work of salvation accomplished by Jesus Christ mainly through his life, Passion, death, Resurrection, and Ascension.

The night the Lord passed over the houses of the Israelites marked by the blood of the lamb, and spared the firstborn sons from death. It also is the feast that celebrates the deliverances of the Chosen People from bondage in Egypt and the Exodus from Egypt to the Promised Land.

The biblical event following the Resurrection and Ascension of Jesus at which the Holy Spirit was poured out on his disciples; in the Christian liturgical year, the feast fifty days after Easter on which the biblical event of Pentecost is recalled and celebrated.

The established form of the words and actions for a ceremony that is repeated often. The actions often have symbolic meaning.

This word (from the Latin, meaning "to hand on") refers to the process of passing on the Gospel message. It began with oral communication of the Gospel by the Apostles, was written down in the Scriptures, is handed down and lived out in the life of the Church, and is interpreted by the Magisterium under the guidance of the Holy Spirit.

The three days of the liturgical year that begin with the Mass of the Lord's Supper on Holy Thursday and end with Evening Prayer on Easter Sunday.

From the Latin trinus, meaning "threefold," referring to the central mystery of the Christian faith that God exists as a communion of three distinct and interrelated Divine Persons: Father, Son, and Holy Spirit. The doctrine is a mystery that is inaccessible to human reason alone and is known through Divine Revelation.

God's interventions and support for us in the everyday moments of our lives. They are important for conversion and for continuing growth in holiness.

The Greek word for memory. In the Eucharist, this refers to the making present of the Paschal Mystery, Christ's work of salvation.

Also known as the Divine office, the public, daily prayer of the Catholic Church.

From the Latin, meaning "a buying back," referring, in the Old Testament, to Yahweh's deliverance of Israel and, in the New Testament, to Christ's deliverance of all Christians from the forces of sin.

An efficacious and visible sign of God's grace, instituted by Christ and entrusted to the Church, by which divine life is dispensed to us.

The communication or dispensation of the fruits of Christ's Paschal Mystery in the celebration of the Church's sacramental liturgy.

The grace that heals our human nature wounded by sin and restores us to friendship with God by giving us a share in the divine life of the Trinity.

An object or action that points to another reality and leads us to look beyond our senses to consider a deeper mystery.

Refers to the ministries that require ordination, such as presiding at the Eucharist, hearing confessions, administering Confirmation,