This paper analyzes the nuances of the Roman Catholic Church’s opposition to suicide. First, we analyze biblical suicide cases, showing that these were not usually met with clear condemnation. Next, we show the development of the Roman Catholic Church’s moral teachings, with special attention to Augustine. The canon law of the Middle Ages still made some distinctions regarding motivation, but at this point, Roman Catholic funerals started to be refused to those having committed suicide as discouragement to others. This was maintained by the Council of Trent. In the twentieth century, the Roman Catholic Church followed modern psychiatry in attributing suicide to mental illness, and the ban on Roman Catholic funerals was lifted. Currently, the Roman Catholic Church tries to discourage suicide while accompanying people in need.