Many thanks for that. Good to see someone on the same wavelength!
Jonah I did not include as it would have meant yet another cross explanation...a character being a part of astronomical movement and I thought there was enough in the book, it was plenty large enough as the background had to be taken into account as well. I thought it contained sufficient to either create an interest or do the opposite!
As you indicate however, there is a vast amount of material of this nature that is awaiting evaluation having either been accepted at face value by fundamentalists or effectively discarded by those with a more scientific outlook. Once the concept of allegory enters the equation things take on a different perspective as you have discovered for yourself.
The tale of Jonah I suspect is adapted from the Indian Manu and fish story and utilised for the purpose of carrying information in the Biblical tale. I admit that I have not looked at this story in depth, I was tempted but during the coarse of research was too involved with other elements, not all of which are in the book, to accomplish everything that I would like to have done. There have been many dead ends in the research as you can imagine, sometimes one chases an idea for months only to eventually find that it does not work out. Such is life. Once the writing was finished...[is it ever finished?] to be frank I was just about exhausted and had had more than enough of the subject for a while. However,I shall definitely look at friend Jonah now that you have rekindled my interest. I suspect that the tale is derived from the Manu /Fish association in the Indian tale but is this Biblical use a reference to precession or pole star loss/change? At the moment I suspect the pole star but I shall have to read, re read and read again and check implications, context and dating etc before forming a firm opinion.
Perhaps this is just what I needed to get me back in the saddle!