When I was a overnight driver I befriend a Indian christian whose Church traces back to St Thomas. St Thomas the apostle went to India to establish Churches. This grew through out history. It is still in existence.
Tradition reads the apostle Thomas was speared to death by lancers on horse. My new friend told me. So I looked it up. It was fascinating. They celebrate the eucharist like Catholics.
This has been preserved from history for two thousand years.