In the Catholic Church, the process of canonization, declaring someone a saint, is a rigorous undertaking. It begins with a Church investigation into the life and virtues of a deceased individual, seeking evidence of holiness. This involves a lengthy process, gathering testimonies and scrutinizing documents. If a certain threshold of evidence is met, a recognized stage is reached, leading to beatification. Further investigation and miracles attributed to the candidate's intercession must be confirmed. The final step is the Papal Bull of Canonization, a formal declaration by the Pope confirming the individual's holiness and officially recognizing them as a saint within the Catholic Church. This bull, a papal letter, marks the culmination of the entire canonization process.