[4] Torp was geographically and spiritually close to Riseberga, where Olof Hedengren [sv] established Sweden's first evangelical chapel (bönhus) in 1855.
[6] The revival that eventually became the Holiness Union erupted near Torp's manor house on the Feast of the Annunciation in 1885 during a prayer meeting in a cottage where the participants strongly experienced the presence of God and the call to pray.
The well-known missionary Fredrik Franson, who helped lead to the organization's founding, had no qualms about teaching and sending women, publishing Profeterande döttrar ('Prophesying daughters') and other works on the matter.
[11] The Holiness Union, which was originally a missionary society, had missions in several countries such as Sweden, China, South Africa, Japan, Swaziland, Germany and France.
[12] Gustafson's writings have been of great importance to Brunstad Christian Church, the Flodberg Circle and Pentecostal pastor Peter Halldorf.
Gustav Edwards (1874–1948), head of the Swedish Evangelical Free Church's Bible institute in Chicago, was a Holiness Union missionary.