Every person appears on earth only for a time. Some of us live to a ripe old age, others pass away at a ripe old age, sometimes a baby or even an unborn child is taken to the Lord child. The reality of dying is inherent in human nature. However, Church Catholic allows support for the deceased, among other things, by celebrating Mass on consecutive days after death. So why a Mass 7 days after death? Is this number somehow symbolic?
It is accepted that the funeral mass is usually celebrated on the seventh day after death. One can guess that this tradition is related to the symbolic meaning of seven. In the Old Testament it referred to a certain interval of time, hermetic and completed. In this context, the mass seven days after death may symbolize the already closed time of the life of the deceased, the complete time from his birth to death.
By another definition, the number 7 can be associated with the creation of the world - God Six days he created the world, worked and made changes, and on the seventh day he rested. Then the normal course of events ceases, action stops, a period of time closes. Metaphorically, therefore, it may refer to the life of the deceased who labored "six days" on earth, while on the seventh day the Lord took him to himself to complete his story in another world.