Ekman was born in 1842 in Strömsbro,
Gävleborg County, to vicar Lars Ekman and Katarina Charlotta Rydberg. He became a student at
Uppsala University in 1862; during that time he found the
Pietist revival movement through
Carl Olof Rosenius' works and publication
Pietisten. He was ordained in 1864 and graduated as a pastor in 1871. In 1869, Ekman married Maria Lovisa Sjöstrom (1848–1927), daughter of provost Carl Fredrik Sjöström and Lovisa Catharina Norman. and became its first president. From 1879 to 1886, he was a teacher at the church's school in Kristinehamn, as well as the school's director and then the missionary director of the Mission Covenant Church of Sweden. There had been much debate about his views due to his book ('The Fullness of the Gospel and Eternal Punishment', 1903). After leaving the Mission Covenant Church, he became managing director of (the Swedish Life Insurance Company), where he had been a member of the board since 1893. In 1891, Ekman was awarded an honorary doctorate in theology by the
Congregationalist-affiliated
Beloit College in Wisconsin, USA. In 1915, he died at his summer home at Furusund,
Stockholm County, Sweden. He was buried at
Norra begravningsplatsen. == Theological views ==