Natural Selection Seems Insufficient

[Angrboda]

That doesn't make it a tautology.  It's only an invincible persuasion if God exists and provided such.  If God doesn't exist, it's just a false belief.

This is just you using words incorrectly again.

 Nope. Whether God exists is irrelevant to my point.  Unlike blind faith, a belief is justifiable/ warranted if you cannot relinquish it. 

In fact that is virtually the ONLY scenario where a belief is fully justified.

You can't relinquish that belief. That doesn't mean it is justified as there are reasons besides justification why you might be unable to relinquish it.

Your belief that being unable to relinquish it makes it justified/warranted is false.

When I was younger I believed that I was from another universe. I was unable to relinquish this belief. That did not make it justified/warranted.

Justification and inability to relinquish operate on different planes. They aren't directly reciprocal.