By faith I mean believing without direct evidence or examining the arguments or just taken from an authority.
This can take several forms whether theistic or not. They all seem to have contradictions as a strengthening factor ironically too.
>Trinity
>3 gods that are actually one.
>It might not make sense, but it is true.

>Homeopathy
>The more you dilute the natural medicine, the stronger it becomes
>It might not make sense, but it is true. Here are some “studies” and anecdotal stories.

>Race
>There is more different within races than between them.
>It might not make sense, but it is true, because “science” says so.

These are examples that come to mind, and I might have my own nonsensical beliefs that I am yet to be aware of, but this phenomena happen everywhere. One could argue people like to be parts of tribes and loyal to the tribe to the point of faith, and I can see the evolutionary benefit of this, however, what makes it near impossible to deal with? It’s like a primitive switch in the brain we have no control of.
How does it work mechanistically? What happens in the brain that triggers this?