He had to deal with the Hussite movement, a religious reformist group that was born in Bohemia, and he presided at the Council of Constance, where the theologist founder Jan Hus, was judged.
Ia harus berurusan dengan pergerakan Husité, kelompok reformis agama yang lahir di Bohemia, dan ia memimpin Konsili Konstanz, dimana pendiri teologis Jan Hus diadili.