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Why the Catholic Church Celebrates the Eve of Christmas and Some Solemnities

 


Fr Lawrence Ogundipe, SDV


Historical Roots and Theological Foundations

One of the beautiful and sometimes misunderstood traditions of the Catholic Church is the celebration of the *eve* of certain solemnities, such as Christmas Eve, Easter Vigil, and the vigil of major feasts. For many Catholics, the celebration on the night before appears almost as important as the feast day itself. This practice is not accidental, nor is it merely cultural. It is deeply rooted in history, Sacred Scripture, and the Church’s theological understanding of time, worship, and salvation.

The Biblical Understanding of Time: “Evening Came, and Morning Followed”

The foundation of celebrating a feast from its eve is found first in Sacred Scripture. In the Book of Genesis, the rhythm of creation is described repeatedly with the phrase:

Evening came, and morning followed” (Genesis 1).

In the biblical worldview, a day does not begin at midnight, as in modern civil reckoning, but at sunset. This Jewish understanding of time profoundly shaped Christian liturgical practice, since Christianity emerged from within Judaism. For the people of Israel, sacred days began in the evening. Hence, the Sabbath starts on Friday evening and continues until Saturday evening.

The Church inherited this sacred sense of time, where God’s saving action is not confined to daylight hours but unfolds from evening into morning. Thus, when the Church celebrates the eve of a solemnity, she is following the biblical pattern in which the feast has already begun.

Jewish Roots and Early Christian Practice

The earliest Christians were Jews who continued to observe prayer and worship patterns familiar to them. Early Christian communities gathered in the evening for prayer, the breaking of bread, and the proclamation of the Word, especially on the day preceding Sunday or major feasts.

By the second and third centuries, vigils had become an established Christian practice. A *vigil* (from the Latin *vigilia*, meaning “watchfulness”) referred to a time of prayerful waiting during the night before a great feast. Christians kept watch, listened to Scripture, sang psalms, and prayed, anticipating the celebration of Christ’s saving work.

The most ancient and prominent example is the Easter Vigil, which St Augustine called “the mother of all holy vigils.” From this central celebration, the custom of celebrating the eve of other solemnities gradually developed.

Theological Meaning of the Vigil: Waiting for God’s Action

Theologically, celebrating the eve of a solemnity expresses the Christian attitude of watchful expectation. Salvation history itself unfolds as a long vigil. Humanity waits in darkness for the light of God’s intervention.

Christmas Eve powerfully embodies this theology. The Church places herself alongside Israel, waiting for the Messiah. The darkness of the night symbolizes the world before Christ, while the coming of the feast proclaims the arrival of the Light who dispels all darkness.

This vigil dimension reflects Jesus’ own teaching:

“Stay awake, for you do not know on which day your Lord will come” (Matthew 24:42).

By celebrating the eve, the Church teaches that God’s grace is something we prepare for, long for, and receive with attentive hearts.

Christological and Sacramental Significance

From a Christological perspective, the celebration of the eve highlights the mystery of Christ entering human history. In the case of Christmas, the Incarnation does not burst suddenly into daylight but comes quietly in the stillness of the night. The Church’s night celebration mirrors this humility of God.

Sacramentally, the Church understands liturgy as participation in God’s eternal time (*kairos*), not merely human chronological time (*chronos*). When the Church begins a solemnity on its eve, she is already stepping into the mystery being celebrated. The feast is not merely remembered; it is made present.

This is why the Mass celebrated on Christmas Eve is already a true Christmas Mass, not simply a preliminary devotion. The same principle applies to solemnities and Sundays whose liturgical celebration begins with Evening Prayer I and the vigil Mass.

Liturgical Law and the Structure of the Church’s Prayer

The Church’s official liturgical norms codify this ancient tradition. According to the General Norms for the Liturgical Year and the Calendar, solemnities begin with Evening Prayer I on the preceding day. This applies especially to solemnities of the Lord, the Blessed Virgin Mary, and major saints.

The celebration of the eve is therefore not an optional custom but an integral part of the Church’s liturgical structure. It reflects the Church’s understanding that worship sanctifies time itself, beginning from the evening and flowing into the fullness of the feast.

Pastoral and Spiritual Importance Today

In contemporary society, where time is often fragmented and hurried, the celebration of the eve has great pastoral value. It invites the faithful to slow down, to prepare spiritually, and to enter the mystery gradually rather than abruptly.

For families and communities, Christmas Eve in particular becomes a sacred threshold, a moment of silence, prayer, and hope before the joy of Christmas Day. It teaches that great mysteries are approached with reverence, preparation, and faith.

Conclusion

The Catholic Church celebrates the eve of some solemnities because she lives by a sacred vision of time shaped by Scripture, tradition, and theology. Rooted in the biblical understanding of evening and morning, nourished by Jewish and early Christian practice, and enriched by deep theological meaning, the vigil celebration expresses the Church’s posture of watchful hope.


In celebrating the eve, the Church proclaims a profound truth: God’s salvation often begins in the quiet of the night, and those who keep watch will be the first to recognize the dawn of His grace.

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