Human beings need to be in parent-child relationships, husband-wife relationships, and brother-sister relationships. In other words, these three relationships must meet at one point. There is one central point. The central points for above and below, left and right, and front and back should not be separate. If the central points are different, the balance between the relationships of above and below, left and right, and front and back will be shattered. Eventually, therefore, the positions of above and below, left and right, and front and back, together with the one central point, form the number seven. Forming the number seven means to become one with God through perfect true love and to form a family in which everything becomes a perfect sphere and achieves harmony and unification.