Divine Hiddenness

[John 6IX Breezy]

Within the framework of Christianity knowledge of God’s existence should matter. Sure, believers disobeyed and rebelled, but one has no ability to either obey or disobey an entity that they aren’t convinced exists in the first place.

I don't think that's entirely true. Consider the following verses—the entire premise implies that a Christian who knows about God can be lost, while an atheist that's never heard about God or His laws can be saved:

"For it is not the hearers of the law who are righteous before God, but the doers of the law who will be justified. For when Gentiles, who do not have the law, by nature do what the law requires, they are a law to themselves, even though they do not have the law. They show that the work of the law is written on their hearts, while their conscience also bears witness, and their conflicting thoughts accuse or even excuse them on that day when, according to my gospel, God judges the secrets of men by Christ Jesus" (Romans 2:15, ESV).