You first have to ask yourself if once believing Jesus is the Son of God you are in a saved state no matter what you do going forward, then what is the point of trying to live a religious life? I'd have to look up the verse but the Apostle Paul said that he buffeted his body and brought it under subjection lest while preaching to others he himself should be a castaway. He also discussed being saved by grace. Asked if after having been saved by grace should we therefore sin that grace may abound? No, he said, we shouldn't. Being religious isn't about lording it in someone's face that you're better than them. It's about doing what you believe the Bible tells us to do that's right and necessary to be pleasing to God. And that gets under the skin of those who hate religion for whatever reason and want to attack us for our faith. As I've mentioned before, it's not enough for them to not believe. They hate those who do.