It was signed by seven priors of the Bosnian Church, on 8 April 1203 at Bilino Polje field, near today town of Zenica, in Bosnia and Herzegovina.
fearing that Emeric might undertake a full-blown crusade against his country, Kulin decided to summon a synod of the Bosnian Church at Bilino Polje.
[2] Following the abjuration of Bilino Polje, Kulin succeeded in keeping the Bosnian Diocese under the Ragusan Archdiocese, thus limiting Hungarian influence.
The same document was brought to Buda, in 30 April by Giovanni da Casamari and Kulin and two abbots, where it was examined by Emeric, King of Hungary, and the high clergy.
They promised to erect chapels with altars and crucifixes, where they would have priests who would say Mass and dispense Holy Communion at least seven times a year on the main feast days.
After the “Confessio” was approved by King Emmerich, John de Casamaris, in a letter to Innocent, refers to “the former Patarenes.”(23) Obviously, he thought that he had converted the krstjani, but he was wrong.
Partly due to Rome's complacency (caused by Casamaris's feelings of success) and the Pope's failure to appoint Latin bishops, as John had suggested, the heretical movement grew stronger over the next few decades, uniting with remnants of the old native Catholic church.
[4][5] Several crusades were called against Bosnia, a country long deemed infested with heresy by both the rest of Catholic Europe and its Eastern Orthodox neighbours.
The first crusade was averted in April 1203, when Bosnians under Ban Kulin promised to practice Christianity according to the Roman Catholic rite and recognized the spiritual supremacy of the bishop of Rome (pope).