He preached in
Philadelphia at St. Luke's Episcopal Church and St. Paul's Episcopal Church in the Chestnut Hill neighborhood until 1863, when he moved to Minnesota, hoping the climate change would help his wife's heath. However, he returned to Philadelphia to take a position at the Church of the Ascension, then for three years, Hare served as the general agent of the foreign committee of the board of missions. In 1872 he was elected
Missionary Bishop of
Niobrara, named after the
Niobrara River in Nebraska. In 1883 that diocese was split, and Bp. Hare's part was extended to include the
State of South Dakota. He wrote several pamphlets on missionary work in the
West. One of the leading missionaries in America, Hare earned the title "the Apostle of the West" for his dedicated work in the rural Dakotas among pioneers and Native Americans. When Hare learned about General
Philip Sheridan's plan to march into the
Black Hills in 1874, territory reserved for the
Sioux by the 1868
Treaty of Fort Laramie, Hare appealed directly to President
Ulysses S. Grant that the operation be canceled. ==Death and legacy==