Christians in Kerala have been a flourishing community for about 2,000 years (if you believe the strong oral tradition about Jesus’s disciple Thomas arriving in Muziris in 52 AD and converting prominent local families, at least 12 of whose house names or surnames are still remembered) or about 1,800 years (if you go by historical record alone, which mentions Pantaenus, a leading theologian of Alexandria, visiting Kerala on the invitation of a community of Christians there, around 190 AD.)