For me, a historical fiction that put norse and chriatianity on similar footing was the push that got me from “ugh this religious stuff is annoying” to “oh, it’s probably bullshit, too”. In hindsight, it’s pretty telling that christianity puts the most emphasis on having faith no matter what evidence or lack thereof is presented, to the point where that alone determines whether one is punished, ignored, or rewarded in a way that is completely unverifiable to anyone living.