Alma 34
“That same spirit which doth possess your body at the time you go out of this life, that same spirit shall have power to possess your body in that eternal world.” This does not mean that we must be perfect before we die. It means that we will not seek to repent, change, or grow more Christlike after this life if we were not doing those things in this life. If we do not progress here we will not begin to progress after we die.