Reading something unenjoyable just for the sake of not having to read something else that you might enjoy doesn’t sound like a particularly compelling reason to read the first book.

Besides, if all you’re trying to do is compress lessons in story writing then you’re better off skipping the Bible and picking up a collection of kids stories - particularly for ages 6 and below because those will often also follow the same lessons of morality to help children understand how to interact in a modern society and are only a few short pages long so much quicker and easier to read than the Bible :P

The only reason I see to read the Bible is if you have a specific interest in the history of Christianity. Even Christians these days pick an choose which parts of the Bible to read and then distil those down into short stories and songs rather than reading the texts in full.