You keep explaining yourself, and I think doing it quite well, but this forum seems
determined to misunderstand your question. Why are there no golden letters written in pure divine light written over the Vatican saying, “This is My Church and you should be part of it”? Why do the bread and wine not
visibly become the Body and Blood during the Eucharist, instead of only invisibly? Why doesn’t Jesus pop into our world capitals from time to time and tell everyone, in a visible form, which scriptures are valid and which one aren’t?
It is a great mystery. I do not think that you will find an answer here, but only in prayer. Our best hint in Christian Scripture is
Luke 16:27-31. I know far too little about the Qu’ran or the Hadiths to say if there are any hints there.
I suspect that the answer lies in a combination. We must consider that original sin made Earth a territory under the Devil’s influence and control, and God, out of respect for our free decision to follow the Devil, chooses to allow that influence to continue. Further sins, by various heretics and their followers, have further clouded the waters. We must consider that skepticism about God generally, and Christianity specifically, is often rooted in something other than sincere intellectual doubt. We must consider that giving a clear and unrelenting sign would perhaps in some way injure the sincerity of the love and service we are made to give to God, or otherwise reduce the praiseworthiness of our faith. We must consider that God’s mercy is great, and that He will not condemn any who sincerely seek the truth with all their heart and strength during their lives. We must consider that God’s decisions are often completely incomprehensible to us mere mortals, and there is some reason for His silence that we cannot begin to understand – the Book of Job is a profound meditation on this last point.
And, to be completely sincere in our own pursuit of the truth, we must consider that perhaps these are all just shoddy excuses for an obvious lack, and the atheists or the Deists are right after all – God either doesn’t exist or doesn’t care about us. Or we must consider that the syncretists are right – all religions are equally valid paths to God, so there’s no need for a clear sign of which religion is “right.” I happen to think both those possibilities are silly, but we must at least consider them if we are being intellectually honest with ourselves.
No matter what the answer, it is certainly one of the most difficult questions religious people in
any faith must face.