, Stockholm Both Petri brothers returned to Sweden in 1519, nearly dying as their ship ran aground on
Gotland island during a storm. They remained on Gotland for a while, with Olaus preaching and assisting the local priest, Soren Norby, and Lars teaching at the local school. In 1520, Olaus returned to
Strängnäs on the mainland, accepting ordination as a deacon and serving bishop
Mattias Gregersson Lilje as secretary, chancellor of the
Diocese of Strängnäs,
canon of the
Strängnäs Cathedral and dean of the cathedral school. Olaus accompanied Mattias to
Stockholm and attended the tumultuous crowning of Danish King
Christian II, who had captured Stockholm and held it for about a year until returning to Denmark, where he was soon deposed and replaced by his uncle, who became King
Frederick I of Denmark. Meanwhile, at the notorious
Stockholm Bloodbath in early November, King Christian violated his promises of a general amnesty for the
Sture party, and during the post-coronation festivities arrested and executed 80–90 churchmen and secular Swedish nobles, including Bishop Mattias. When Olaus expressed his outrage, he was almost executed as well, but a German who had seen him in Wittenberg identified Olaus as a fellow German and thus saved his life. The Petri brothers' efforts to teach their king and fellow Swedes about Luther's ideas bore fruit the following year, as the
Diet of Västerås declared Sweden Lutheran. In 1531, Olaus published a slightly simplified version of the Catholic mass in Swedish. Vasa also confirmed the kingdom's Lutheran alignment in 1531 by appointing Lars (who had been ordained a priest in 1527 and had married a daughter of the king's cousin that year)
Archbishop of Uppsala, in part because the Pope refused to acknowledge the consecration of his candidate as bishop of Strängnäs, Magnus Sommar (1528–36; ultimately deposed and forced into retirement by the king). Contemporaries described Olaus as energetic and pushy, particularly about matters in which he believed strongly. He also wrote a Swedish
hymnal, liturgical manual, and many
homiletic and polemic tracts. In fact, some consider the brothers and their ally Laurentius Andreae (who had physically crowned Gustav Vasa king in 1523) responsible for most early Swedish
printed literature. Olaus also wrote a Chronicle of Sweden, which despite some historical inaccuracies, contains many interesting facts and anecdotes and remains an important historical document. Olaus also had an important part in translating the whole Bible into the vernacular; the
Gustav Vasa Bible was completed circa 1541. In 1539, Olaus Petri was ordained a priest, as permitted under Luther's reforms, and perhaps influenced by the
Sun dog phenomenon of 20 April 1535 which caused Olaus to commission the mystical painting
Vädersolstavlan and preach some apocalyptic sermons. However, shortly after his ordination, Olaus' relationship with King Gustav deteriorated sharply. Olaus was arrested and put on trial for treason, supposedly because he had learned about a conspiracy against the King during
confession and had not revealed it. One historian suggests that Olaus' writings criticizing the King's harsh punishments and taxation policies contributed to the criminal trial. King Gustav also wanted to control the church, while Olaus distrusted the king's
autocratic tendencies and supported religious self-governance. After Olaus Petri and Laurentius Andreae were found guilty on January 2, 1540, both received death sentences, and even his brother Lars signed the judgment. However, after much bargaining and many requests, friends managed to get both clergymen released on bail (Stockholm's merchants contributing to pay the stiff fines), although clearly their political careers had ended. Olaus received a
royal pardon in 1542, possibly as a reward for completing the massive biblical translation project, and in that year was appointed inspector over Stockholm's schools. The following year, he was promoted to dean of St. Nicholas' Church (
Storkyrkan) in Stockholm, and fulfilled that priestly position during the final nine years of his life. ==Death and legacy==