In one class I took on Romans, the professor asked a question to the class, ‘is it possible to be saved without the Gospel?’ Since we were in Romans 2, and Romans 1 was so last week, I decided to go with yes- if one without the law follows the law written on his conscience/heart. Now Paul goes on to technically add that if you screw up one time then you’re guilty of breaking the whole law and there’s not one righteous.
I’ve become convinced, thanks to @TedDavis, that Romans 1:20 is for those that already ‘know God’ through nature but didn’t worship him but rather creation. I.e. see:
At the end of the day though, I’d probably have to just believe that God is a fair and just judge and only be able to leave it at that.