A cikin 1521 Kalmar Union ya rushe kuma Gustav Vasa ya zama Sarkin Sweden. A lokacin mulkinsa, Ikilisiyar Sweden ta sake fasalin. Gwamnatin gwamnati ta yi gyare-gyare da ci gaba sosai, ta ba shi iko mai karfi a kan rayuwar al'ummomin gida da kuma ikon tattara haraji mafi girma. Bayan bin manufofin gyare-gyare, a cikin 1551 Mikael Agricola, bishop na Turku, ya wallafa fassararsa na Sabon Alkawari a cikin harshen Finnish. Tambaya: A lokacin mulkin wane ne Ikilisiyar Sweden ta sake fasalin?
Mikael Agricola, da kuma