Where do i even start with that, when i was in the military, there was a guy i looked up to at the time he said something like that, and that the bible was written to keep people under control and/or obeying their Masters etc.. etc.. after getting a brain i realized he was wrong about a lot of stuff, and nothing he said was worth a pinch of salt, so i tried reading it for my self.
The truth is Moses wrote the first books in the bible Genesis, Exodus, Leviticus, Numbers, Deuteronomy in the old testament, he was inspired by direct revelation from god, then after that, various prophets of god, such as Joshua and Samuel with their scribes or understudies that could edit and finish of works started by the said prophet once they died. New testament was written by the Apostles they were Jesus's followers, and first hand witnesses, and by Paul who was converted to Christianity after seeing the risen Christ, on the road to Damascus.
Moses parting the sea and defeating the Egyptians, was known by many of the enemies of the Hebrews, they feared them because of it
As there are12 tribes of Israel, some minor facts that each tribe argued over points of view exist, hardly anything to worry about unless you a Hebrew scholar.
i read the bible as the word of God handed directly to the prophets of God, for Gods People to follow