Dear Fran - You have a wonderful Faith, you are not limited

To answer your question fully is off topic, so just a quick note
Firstly Jesus Word contains all that we can know, what was the issue was that mankind was not ready for all that could be known. Thus there was more to say unto us.
If one really looks justly at the past, one can say knowledge definitely started increasing rapidly from the early to mid 1800’s…why was this so?
This statement is of interest from 1843 "in a report to Congress in 1843 by an earlier Patent Office Commissioner, Henry Ellsworth. In it Ellsworth states, “The advancement of the arts, from year to year, taxes our credulity and seems to presage the arrival of that period when human improvement must end.” Then 60 odd years later Charles H. Duell who was the Commissioner of US patent office. It is said that Mr. Deull’s most famous attributed utterance is that “In my opinion, all previous advances in the various lines of invention will appear totally insignificant when compared with those which the present century will witness. I almost wish that I might live my life over again to see the wonders which are at the threshold”
Perfect unfolding of this Daniel12:4 "But thou, O Daniel, shut up the words and seal the book, even to the time of the end. Many shall run to and fro, and knowledge shall be increased.” On to revelation 22:10 "And he said to me, “Do not seal up the words of the prophecy of this book, for the time is near”.
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Now I would ask, could Jesus 2000 years ago teach the Oneness of God and God is the Founder of all true religion without telling us that fact in Parables and words of Hidden Meaning and hope we would all be detached enough to accept it. After all the extent of the world and religions was not even known!
Has the world accepted the Oneness of God and His religions even now!
God Bless and Regards Tony