When is a Religious Belief Delusional?

[Angrboda]

Any notion of fairness already presupposes some measure existential equality. You're arguing in circles. Let's step further back. I believe there are moral facts. Are those delusions?

How do you determine what exactly these "moral facts" you claim exist really are?

I think his point is that we accept the existence of morals without tangible evidence of their reality, and we don't consider people who act on morals to be deluded, so we shouldn't hold people who hold to the existence of God delusional because they are in the same boat, asserting the reality of something without tangible proof (or disproof).