Edited sentence: In the Christian belief system, that individual is not dead, but in Heaven and it is presumed that all believers in Christianity will ultimately be united.Once it is established within the Christian church that life does not end with death; but is the beginning of a new and perhaps better afterlife; literally in God's Heaven, then there is no purpose in mourning the death of an individual who is a "believer".The death or passing of an individual from the mortal or worldly plane becomes not a source of mourning but rather a source of rejoicing for believers in the Christian faith.The sanctions prescribed in Leviticus against mourning the dead mark a significant change in peoples belief system about an afterlife