Raised Methodist, we didn’t have sins. Just “do good. be good”. They never mentioned the devil or hell. Just wasn’t a thing there.
In the Orthodox, their idea of sin is “missing the mark”. So, like shooting a rocket to the moon: you have to make thousands of tiny course corrections or you miss the moon. Sort of like “if you fall off the horse, get back on it”. So, every day there’s thousands of opportunities for mistakes or for doing things well. So you get lots of practice and you can get more and more skilled.
It just wasn’t important. Methodist was basically “do good, be good people”. It’s good to be good. Be a good neighbor. Be helpful. Be kind. Jesus was helpful and kind. etc.