Before Oskarström had its own church, the area was divided between the parishes of Slättåkra and Enslöv, each some distance away. For years, services were held in makeshift settings: first in the Drareds school, then in the dining hall of the jute factory itself, and later in the newly built school once a folding wall allowed its two rooms to be combined into a larger worship space. A small tower with two bells and a cross above the entrance marked this improvised arrangement.
The need for a proper church was widely felt, and funds were raised through subscription cards distributed as far afield as Blekinge and Dalarna, though donations covered only a fraction of the cost. The jute factory, the sulphite factory, the two neighbouring parishes and many local residents contributed the remainder, and the factory also donated the building plot, known as Vargbacken.
The church was built in 1916–1917 to designs by the architect Otar Hökerberg and consecrated in 1918. It is a cross-shaped church built in hand-struck red brick from the Slottsmöllan brickworks, in a style balancing Art Nouveau and National Romanticism. Tall round-arched windows, buttresses, steep gabled roofs and a slender copper-clad spire over the eastern tower give the building its distinctive silhouette, while two covered gateways (stigluckor) lead into the churchyard.
Inside, the walls and ceiling are limewashed and the woodwork is finished in a dark brown oil glaze; there is no separate ceiling structure, and two galleries run along the interior. Decorative and stained-glass work is attributed to Yngve Lundström. Notable fittings include a dark wood pulpit on a brick base, a carved wooden font, and an altarpiece triptych centred on the image of the lamb bearing a victory banner, flanked by kneeling angels. A carved eagle of St John and a wooden relief above the altar are the work of sculptor Tore Strindberg.
The church's bells have their own history: early services used bells originally cast for the jute factory in 1891, later transferred from the Maredsskolan. Wartime shortages of tin delayed the casting of new bells until 1921, when the sulphite factory donated replacements and the older bells were given to Skavböke chapel. The church has had more than one organ over the years, including instruments built by Olof Hammarberg and later by Tostareds Kyrkorgelfabrik, along with a small choir organ from 2005 said to be the last instrument produced by Västbo Orgelbyggeri.