Body cremation (burning) is something people have been practicing since the earliest times. In this graduate thesis I want to declare theological and moral judgment of body cremation in the context of Christianity, especially to stimulate by issuing instruction 'Ad resurgendum cum Christo’, the Congregation for the Doctrine of the Faith written in august, 2016. In order to better understand the (non) permissibility of cremation, the first part of the book brings the religious perception of the body and death. Unpublished religions, because of their specific view of the body and beliefs in reincarnation, are much more open to this practice. Hinduism observes the body as the constraint of a human soul that has to rise above body life. As long as he does not rise up with reincarnation or re-birth, he returns to life. The goal is to unite with Brahman. Buddhism resembles life in a similar way. Everything is passable, changeable, seemingly. On the other hand, Judaism, Islam, and Christianity are published religions, which see the value of the body in the fact that it comes from God and will resurrect once in the exact same form. Islam and the Jews therefore do not allow cremation. Body cremation in Christianity has not always been allowed, except in cases of contagion and a great epidemic. Since the middle of the 20th century, the Church, under certain conditions, allows cremation. It is most often determined by the motive behind the choice of cremation. If the motives oppose Christianity, cremation is inadmissible and the Christian ritual ceremony is denied. However, even in cases where cremation is allowed, there are a number of moral issues, and the work implements the ecclesiastical provisions on burial and cremation of the body, as well as issues such as preserving the urn, permitting the shedding of the ash, etc.