ST. PAUL, Minn. (CNS) -- Bishop Paul D. Sirba of Duluth, Minnesota, died at Essentia Health-St. Mary's Medical Center in Duluth Dec. 1. He was 59.

According to a statement from the diocese's vicar general, Father James Bissonette, Bishop Sirba suffered cardiac arrest at St. Rose Catholic Church in Proctor and was rushed to the medical center where lifesaving measures were unsuccessful.

He died shortly after 9 a.m. He received last rites from Father John Petrich, a hospital chaplain.

"Words do not adequately express our sorrow at this sudden loss of our shepherd," Father Bissonette said. "We have great hope and faith in Bishop Sirba's resurrection to new life, and have confident assurance that he will hear the words of our Lord: 'Well done, good and faithful servant, enter in the joy of your Master.'"

Bishop Sirba grew up in Bloomington, Minnesota, and attended Nativity of Mary Catholic School in Bloomington, Academy of Angels in Richfield and the University of St. Thomas in St. Paul. After studying at the St. Paul Seminary in St. Paul, he was ordained a priest for the Archdiocese of St. Paul and Minneapolis in 1986.

He was an associate pastor at St. Olaf Parish in Minneapolis from 1986 to 1990 and at St. John the Baptist Parish in Savage from 1990 to 1991. From 1991 to 2000, he was a member of the spiritual formation department at St. John Vianney College Seminary in St. Paul. He then served as pastor of Maternity of the Blessed Virgin Parish in St. Paul from 2000 to 2006 and as a spiritual director at the St. Paul Seminary from 2006 to 2009.

Archbishop John C. Nienstedt appointed him vicar general and moderator of the curia for the archdiocese in July 2009. Pope Benedict XVI appointed him bishop of Duluth and he was ordained a bishop in December 2009. He succeeded Bishop Dennis M. Schnurr, who was appointed coadjutor archbishop of Cincinnati and is now head of the Ohio archdiocese.

Father Bissonette asked for prayers for the bishop, his family and the diocese. Funeral arrangements are pending.

Archbishop Bernard A. Hebda of St. Paul and Minneapolis tweeted shortly before noon Dec. 1 that the "Archdiocese of St. Paul and Minneapolis grieves with the Diocese of Duluth over the passing of their beloved shepherd, Bishop Paul Sirba, recalling his many years of joyful service as a son of this local Church. May be rest in peace."

In a Dec. 1 statement, Archbishop Hebda said that his heart "goes out to Bishop Sirba's family and to the priests and faithful of the Diocese of Duluth as this grieve his sudden passing."

"A native son who loved Christ and his church, he will be missed throughout this archdiocese as well," he said. "A man of prayer and discernment, he will long be remembered for his humble and compassionate Christ-like service.

"While saddened by his passing, I give thanks to God for Bishop Sirba's friendship, example and counsel, for his leadership of this Church of Duluth, and for the fruits that are still being harvested from his selfless ministry as a priest of this archdiocese. May he rest in peace."

Father John Ubel, rector of the Cathedral of St. Paul in St. Paul, told the congregation at the noon Mass Dec. 1 about Bishop Sirba's death, saying he had learned of it just two hours earlier. He incorporated the sad news as part of his sermon on the Gospel of St. Matthew and the Lord's coming "at an hour you do not expect."

That passage hit particularly close to home, Father Ubel said. Several in the congregation gasped with recognition, even as Father Ubel said some may have known Bishop Sirba as a priest of the archdiocese.

"He was one of the holiest priests, no, he was the holiest priest I've ever known," Father Ubel said, while sharing that he and the bishop had spent a week together only a month ago.

After the Mass, Father Ubel told in The Catholic Spirit, the archdiocese's newspaper, that he and Bishop Sirba became close friends while they lived and served at St. Paul's seminaries from 1994 to 1998, Father Ubel as co-director of vocations for the archdiocese and then-Father Sirba as a spiritual director at St. John Vianney College Seminary.

They had recently spent a week together in Europe, along with Bishop Sirba's brother, Father Joe Sirba of the Duluth Diocese, honoring the lineage of the Sirba family along the borders of Austria and the Czech Republic. The founders of St. Agnes in St. Paul, where Bishop Sirba said his first Mass as a priest and Father Ubel served as pastor from 2006 to 2012, also hailed from that region, Father Ubel noted.

Bishop Sirba was a particularly holy priest because of his "tremendous goodness, his kindness, his gentleness," Father Ubel said. Bishop Sirba was a humble servant in his service to the church, including as a bishop, Father Ubel said, while recalling that Bishop Sirba would have celebrated his 10th anniversary as a bishop Dec. 14.

"It's a great loss for the Diocese of Duluth. He was greatly loved by the laity, clergy and religious alike," Father Ubel said.