Answer:
There is only life after death to people who accept Jesus as their Saviour and obey His commands. In a Bible, we cannot find someone celebrating the 40 days of death. It is not Biblical and it is a tradition of catholicism and paganism.
People do not know each other when they are in heaven, but that will only be revealed after judgement day. People who are Christians when they died, they are in paradise waiting for God's judgement and that will happened in these last days.
