Twilight Hue
Twilight, not bright nor dark, good nor bad.
The problem is you approached the problem in an awkward way, Yes, the scripture evolved with the evolution of the cultures, religious beliefs and scripture centering on Judaism and Christianity as they became religions with a relatively fixed scripture.The scripture evolve up until ~400 BCE? to 200 AD for Judaism, and ~200 to 400 AD for Christianity.
New perspectives on the Bible as evolved scripture began in the 18th and 19th Century. Our recent discoveries including the vast Sumerian, Babylonian, Canaanite and Ugarit cuneiform tablets have traced the roots of the Pentateuch back to the Sumerian culture.
My Approach is based on timelines and discovered artifacts.
Obviously later discoveries weren't known by people prior to the discoveries themselves.
This leaves the question as to what they had to go by earlier on. How they themselves discovered and acquired their information.
I found the Septuagint to be an incredibly useful example as it can be compared with the Dead Sea Scrolls for which I'm sure the Catholic church in medieval days weren't aware of.
By comparing the Septuagint with the Dead Sea Scrolls you can see any similarities, differences, add-ons or omissions to get a picture of how the Bible had morphed throughout the centuries.
It looks awkward because it's like a jigsaw puzzle. Bits and pieces scattered around everywhere, and still figuring how to put it together in order to get the whole picture.