The article is devoted to the attitude of Polish bishops towards the Hussite heresy in the mid-15th century, a problem that has been addressed many times in Polish historiography. The author analyses the influence and extent of the heresy, as well as certain steps taken by the hierarchs in the face of this threat - in the field of priestly legislation and specific actions of the Inquisition.
As it turned out, Hussitism was widely condemned and its adherents subjected to an inquisition that varied in scope. Not all bishops shared the zeal to combat the Hussites - some did not consider the heresy to be particularly dangerous. However, the Bishop of Cracow, Zbigniew Oleśnicki, was a staunch enemy of Hussites, as was the Bishop of Poznań, Andrzej de Bnin. He used all means to combat this heresy, but also ensured that neither the monarchy nor the bishops allied themselves with the Bohemian Hussites. This situation lasted for a long time, until the early 1530s.
In the 1530s - at a time when this alliance against the Teutonic Order and Swidrygel could have been advantageous for Polish politics. Oleśnicki did not take this into account and in no way abandoned the ban. The author concludes by pointing out that this topic requires further detailed research, especially in connection with the pastoral activities of members of the Polish episcopate.