(born 3000 years ago, you couldn't be Christian; born in India you'd likely be Hindu or Jain or Muslim if you had a religious impulse).
I meant for those to be two separate hypotheticals.
That is, born in a different time or a different place, you'd almost certainly not be Christian because that wouldn't be a realistic option.
Born 1000 years from now, Christianity might be a faded relic nobody believes in anymore.
[fortuitously, Kinky Friedman's They Ain't Making Jews Like Jesus Anymore just kicked in on my playlist]
Anyway, the idea that you happened to be born into the one true religion seems rather implausible given all the religions that exist now and those that have come and gone. While devout Hindus believe they belong to the correct religion, as much as Christians do. A billion somebodys are wrong. Almost certainly 2B.
I guess I could have made it clearer by writing:
(born 3000 years ago, you couldn't be Christian; born in India
today you'd likely be Hindu or Jain or Muslim if you had a religious impulse).