The archdiocese then assigned Warfel as pastor of St. Mary Parish in Kodiak, Alaska from 1990 to 1995. While in Kodiak, Warfel instituted a Sunday Mass in Spanish for Spanish-speaking parishioners. He was named pastor of Our Lady of Guadalupe Parish in Anchorage in 1995.[3][4]
Pope Benedict XVI named Warfel as seventh bishop of Great Falls-Billings on November 20, 2007.[6][2]He was installed by Archbishop John Vlazny on January 16, 2008.[1] Within the US Conference of Catholic Bishops (USCCB), Warfel served as chair of the Subcommittee on Catholic Home Missions and as a member of the Administrative Committee.
In 2010, Warfel was the keynote speaker at the Msgr. Philip J. Murnion Lecture of the Catholic Common Ground Initiative in Chicago, giving an address entitled, "Journey to Communion in Christ". He was a member of the Catholic Common Ground Advisory Committee.[7] As of 2023, Warfel is a board member of the Montana Catholic Conference and the University of Providence in Great Falls, Montana.[4][8]
In July 2018, Warfel reprimanded two priests from the diocese who, in clerical garb, attended a rally in Great Falls, Montana, for President Donald Trump. The rally organizers seated the two men in the first row behind the podium. They were seen clapping when Trump joked about the MeToo movement and referred derisively to U.S. Senator Elizabeth Warren as "Pocahontas". Warfel told the priests that they should have worn civilian clothes to the rally and should have requested less visible seats.[9]
Retirement
In 2021, anticipating his retirement as bishop of Great Falls-Billings in 2023, Warfel asked the Vatican to appoint a coadjutor bishop to assist him. In response, Pope Francis named Reverend Jeffrey M. Fleming as coadjutor bishop on April 19, 2022.[10] Fleming automatically became the new bishop of Great Falls-Billings when Francis accepted Warfel's resignation on August 22, 2023.[11]