Since the Word came from The Hebrew, it would be by necessity, the origin and source, to gain the intent and purpose , it was given to Moses directly from the Creator, to understand what is being given.
The so called ‘Old Testament’ is His story, of linage and the other peoples they came in contact.
I agree but Moses used his own culture to convey the message. Hebrew is an Afro-Asiatic language as is ancient Egyptian. They are going to be much closer in meaning and structure than any of those languages is to an Indo-European language. Given that the Hebrews lived amongst the Egyptians for 400 hundred years and Moses himself was raised Egyptian, many meanings will be the same.