That is not the issue I/we are discussing. The issue is how the humans comprehend things when one gained consciousness.
The first stage is comprehending things from what others tell us. The initial source is "hearing" from others. Right, please?
Regards
As an infant, your brain is pretty much hardwired to receive input in "overdrive". A chinese child can learn chinese in 2 years. It takes an adult 10+ years.
The learning you do in that stage in life, comes from all kinds of sources. Sound, touch, smell,... Pretty much everything you do, you are learning about the world.
A baby that's banging 2 objects together and throwing them around, is learning about tear, sound, gravity, hard and soft materials, ...
No, the "initial source" is not just "hearing" and
certainly not listening to explanations. Since you need to learn how to speak and how to interprete language. Nobody is born speaking english.
Your first source are your primal senses. Touch, smell, sight and yes, hearing.
Once you master language, you're hardwired to pretty much swallow up everything your perceived authorities tell you. In most cases, these consist of your parents and teachers primarily, and other adults to some extent.
This is the "indoctrination stage" of religion. This is the same period that children are told about Santa Claus (and they are completely on board with the story!). After a while, they figure out that things aren't right about it. And since the parents don't believe it themselves, and are getting pretty tired of having to sneak around with christmass gifts, they don't put up much of a fight and acknowledge / admit very fast that it's idd just a story.
But they don't do that with god. God is talked about as if it's a real member of the family. When youngsters come with questions (just like they come with questions about santa), those questions are quickly crushed and very oftenly demotivated / frowned upon. You might have to start going to sunday school, where the indorctrination will be kicked up a notch. Etc.
As you grow up, your brain grows out of this "spunge" stage. After that, learning becomes slower and more difficult as you grow older. If throughout that "spunge" state, and thoughout your rebellious teen years, you were constantly submerged in a religious environment, it will prove very hard psychologically to let that go. Even if in college you learn things that clearly are incompatible.