When Scandinavia became Christian

Christianity arrived gradually to Sweden, and the process of conversion was a complex historical transformation. Christianity encountered different traditions and social settings in different regions, since pre-Christian religion had never been uniform.
  • Iron Age

    500 BC – AD 1100

  • Viking Age

    AD 800 – AD 1100

  • Middle Ages

    AD 1050 – AD 1520

Silver crucifix with raised edge. Within the edges the figure of a man with outstreched arms.
Crucifix from Sandegårda, Gotland. Photo: Ola Myrin, The Swedish History Museum/SHM (CC BY 4.0).

While parts of what later became southern Sweden had been influenced by Christianity long before the Viking Age, it would take a long time before northern Scandinavia became Christian. In truth, it was not a single conversion, but many. In some regions, conversion was swift: landscapes and traditions changed within a generation or two. In other areas it took several centuries. By the 12th century the Christian church organisation was fully established in what is now southern and central Sweden.

Missionaries in the North

The missionary Ansgar tried to preach the Christian faith in Birka as early as the 9th century. His efforts seem to have met with limited success. He came from the Catholic headquarters for northern Europe, the archdiocese of Hamburg-Bremen, which was eager to gain influence in Scandinavia. From there missionaries were sent out.

Ideas of Orthodox Christianity also reached the North, but from the east, and missionaries and bishops came as well from the British Isles. Real results did not appear until the late 10th century, and more so in the 11th. By then churchmen had succeeded in persuading the powerful in society to accept baptism, build churches, and appoint bishops.

A metal rod with a decorated circular head. The head piece depicts a man being swallowed by a fish.

Crozier

Bronze crozier with images of Jonah. Possibly made on the British isles.

For the ruling elite, conversion brought great advantages. The clergy were skilled administrators and builders of society. They could impart knowledge about how kingdoms were to be created. A Christian king was a very different sort of ruler from the Scandinavian kings of the Viking Age. The new Christian monarchy claimed new rights and employed new and more effective instruments of power.

New traditions

The coming of Christianity thus brought a new type of kingship, but also much else. All the old burial grounds were closed, and the dead were now to be interred in new churchyards. Whereas before there was often a burial place for each village, or even each farm, there were now to be far fewer, one per parish. In earlier times, the dead in the family burial field had been tied to the living relatives’ rights to farms and land. Now all were to be part of the greater Christian community centred on the church.

A cross-shaped pendant in the shape of a man with outstreched arms.

Crucifix

This famous little crucifix was found in a wealthy woman’s grave in Birka. She had probably worn it as a pendant on a chain around her neck. The crucifix dates from the 9th century and is the oldest in Sweden. It was made by a Scandinavian smith who was likely more accustomed to working with pagan animal ornamentation. Found in grave Bj 660, Birka.

On view at Historiska museet in the exhibition Guldrummet

Summary

Christianity gradually spread to Scandinavia, encountering various local traditions, which made the Christianization process long and varied, lasting several hundred years. Missionaries from both the west and south worked to convert rulers, build churches, and establish bishoprics, giving the new Christian kings greater power and transforming both social structures and burial rituals, while old sacrificial sites were replaced by churchyards and new religious traditions took shape.

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