Christmas did not begin its story in a vacuum. It arose within the vast and vibrant Roman Empire, a place where countless gods, rituals and traditions were already woven into the rhythm of everyday life. When early Christians eventually shaped their own celebrations, they did so whilst living among people who already marked their calendar with festivals, feasts and customs. Christmas was a celebration which developed in conversation with the pagan world around it, and echoes of ancient Roman festivities can still be heard to this day.
Before Christmas ever graced a church calendar, the month of December belonged to Saturnalia, the most beloved festival in the Roman year. Dedicated to Saturn, the god of agriculture, Saturnalia was a season of feasting, public merriment, exchanged gifts and an inversion of ordinary social rules. Slaves were permitted to dine alongside their masters, ordinary citizens dressed in colourful clothing and laughter filled the streets. For the Romans, Saturnalia was a cherished invitation to joy and generosity, when daylight was at its shortest.
As Christianity spread across the empire, its followers could hardly avoid the fact that they were living beside these exuberant customs. They worked, traded and travelled among people who had long found comfort in Saturnalia’s festivities. Even while Christians rejected the worship of pagan gods, the rhythms of the culture around them could not simply be dismissed. The earliest believers did not yet celebrate Jesus’s birth. Easter, with its promise of resurrection, held far greater importance at that time, and still does in many parts of the world. But the season of Saturnalia left a deep imprint on the Roman imagination, an imprint that would shape the Christmas period in centuries to come.
Another celebration, emerging later but carrying immense symbolic power, prepared the ground for what would eventually become Christmas Day itself. On the 25th December, the Romans honoured Sol Invictus, the Unconquered Sun. This was the moment in the year when the sun, having reached its lowest point in the winter sky, began its slow ascent once more. Light returned, day by day, and darkness lost its hold. As a sufferer of mild Seasonal Affective Disorder, I am still somewhat obsessed with this, and track the progress of the sun’s re-emergence quite obsessively on an app on my phone. The emperor Aurelian was perhaps a fellow sufferer, for he elevated the sun god to renewed prominence in the third century, building a temple in his honour and giving the festival the stamp of imperial authority. The symbolism was unmistakable: the rebirth of the sun signalled renewed strength, hope and the promise of triumph.
The imagery of light returning to the world resonated with early Christians. Long before Christmas existed, the early Christian writers were already describing Jesus as a radiant presence — a light that shines in the darkness, a sun of righteousness. When the time came to choose a date to mark the birth of Christ, an alignment with the festival of the Unconquered Sun carried a poetic logic. Winter solstice celebrations already existed across many cultures and Christians, surrounded by a world that already rejoiced at the return of daylight, found in them a natural metaphor for their own faith.
Yet the decision to celebrate Christmas on December 25th did not happen quickly. For centuries, Christians debated whether Jesus’s birthday should be celebrated at all. Some early theologians went so far as to criticise such birthday celebrations as pagan excess. In the end, theological reasoning blended with cultural reality, and a compromise was reached. The celebration of Christ’s nativity was drawn into the orbit of Rome’s winter festivals.
Once Christianity gained legal recognition under Constantine in the 4th century, church leaders faced the challenge of guiding a vast and diverse population into a new religious identity. The empire still had the legacy of the customs of Saturnalia, the reverence for Sol Invictus and countless other local traditions. Abolishing such celebrations outright would have caused confusion and led to civil unrest. Instead, Christian leaders chose the path of least resistance: they recast familiar festivities with new meaning. They did not graft pagan worship onto Christianity, but they repurposed cultural habits — gift-giving, feasting and decorating homes — to fit the story that they wanted to tell. In doing so, they allowed people to continue the customs they loved whilst shifting the spiritual focus.
Christmas grew within this climate of adaptation and reinterpretation. Many of the customs that now feel inseparable from the holiday were once part of Roman winter traditions. The exchanging of gifts, once associated with Saturn’s festival, found a new home in the tale of wise men bearing offerings for a newborn child, and in the Christian emphasis on charity and care for the poor. Feasting and joyful gatherings continued, now wrapped in the language of celebration for Christ’s birth rather than Saturn’s agricultural blessings. Lights and candles, once meant to honour the returning sun, became symbols of the divine light that entered the world in Bethlehem according to Christian belief. Even the greenery that adorned Roman homes during winter — a symbol of life persisting in the cold — persisted in later centuries as wreaths, boughs and eventually the Christmas tree.
Such continuities do not make Christmas a pagan holiday in disguise. Rather, they reveal how cultural transformation naturally unfolds. Christianity, growing from a small sect into the dominant religion of a sprawling empire, had to find ways to speak to the hearts and habits of its people. In Rome, this meant placing the celebration of Jesus’s birth in a season already rich with meaning, then slowly reshaping that meaning through worship, stories and symbolism. As centuries passed, Christmas continued to evolve. Medieval Europeans added their own layers of traditions of plays, feasts and symbolic foods. Later still, modern customs from Victorian England and American culture reshaped the holiday yet again, giving us carols, cards, Santa Claus imagery and the commercial bustle that now defines the season, for better or for worse. But beneath all these layers, the ancient Roman foundations still flicker like candlelight. The joy of gathering with others in the dark of winter in anticipation of the increasing daylight to come; the encouragement to be generous and think of others in need; the glow of lights that promise warmth and renewal. All these traditions echo the old festivals that once marked December long before Christ was born.
Understanding this intertwined history should not diminish Christmas for anyone, Christians included. The holiday stands as a testament to humanity’s enduring desire to find meaning in the dark months, to celebrate hope’s return, and to bring warmth into the coldest part of the year. Through Christianity’s encounter with Rome’s festivals, the season became a bridge between worlds — between old gods and the new faith, between ancient customs and evolving traditions, between winter’s chill and the promise of returning light. In that sense, Christmas is not merely a date on the calendar, but a centuries-long story of cultural evolution, a process that is still unfolding each time December rolls around.
