Lunde was born at
Lillehammer, Norway. He was the son of Knud Truls Wiel Lunde (1827–1915) and Mariane Sophie Brun (1835–1911). Lunde graduated
artium in 1883. He studied theology at the
University of Kristiania and became
cand.theol. in 1890. He first worked as a teacher before he was ordained at
Kristiansand in 1897. In 1900, Lunde became a parish priest in
Bygland. In 1906, Lunde became the resident chapel and in 1910 parish priest at
St. Johannes Church in
Stavanger. In 1920 he moved to
Kristiania (now Oslo) and became a parish priest at
Gamlebyen. From 1922 until 1937, Lunde was Bishop of the
Diocese of Oslo. Due to strong commitment to Sunday school and to children's religious education, Lunde became known as the Children's Bishop. His projects included youth work across Norway. Among other roles, he was President of the World Sunday School Council. As a bishop, he hosted an international Sunday School Congress at Oslo in 1936. ==Personal life==