+JMJ+
Hi. I think you should read G.K. Chesterton’s works. Almost all of them are already online and most can be found
here.
I would like to quote Chesterton’s work
The Everlasting Man, because there is an anecdote there
precisely about this. Chesterton was promoting a thesis that there was a primordial religion to One God that the whole world, except for the Jews, eventually forgot, and evidence can be found in all religions. He then relates these anecdotes:
And as you read through the work, Chesterton then points to the fact that ALL polytheistic religions have a curious fading away of this “Great Spirit,” focusing more and more into minor deities, along with a tale of the sundering of Heaven from Earth. It was as if something happened all those millennia ago, when God was forgotten by almost everyone and everything except for those tantalizing smidgens of clues in mythologies.
The Jewish, Moslem, and Christian traditions also have a tale like this, and it is called The Fall.
That answers the first question, “why the Christian God had not given the Biblical revelation to the Indians”: they, as all men, knew the Christian God, but they forgot because we all turned away from Him. And the New testament, God willed that it be spread to them by Christians in due time.
But read the rest of the book, it’s excellent, you will not regret it
As for the second question, “why the Christian religion is the right way to worship the “Great Spirit”, as he called God,” in my opinion the best way to answer is point to the Saints! Does he want happiness, even in this life? Then follow the ones whose joy cannot be touched by poverty, disease, persecution, disaster or any other evil that the world can throw at them. There are no people on Earth who were or are happier than them. There are other ways too, like civilization.
God bless!