Christians would say that I should “pray that he would come to a saving knowledge of Jesus Christ before he meets God.” There was a time when that would have been my Number One Priority. I would have hounded him and made him absolutely miserable until he caved and “gave his life to Christ”, even on his deathbed.
What IS real is a helping HAND when someone needs it. Forget about “God closing a door”. If you can be the HAND that helps someone up, then do it. A closed door doesn’t relieve you of your part in the life of a friend, colleague, or neighbor. If you are able to help and don’t, then “Whatever you did for one of the least of these brothers and sisters of mine, you did for me” (Matt 25:40) is meaningless.