It's easier for our brains to have a list of rules and say, "If we keep these rules, we're in, and if we don't keep these rules, we're out." The problem with grace is that it doesn't play by the rules. It covers sin, and it washes away shame. It releases you from self-hatred. You then realize, through grace in Jesus, and believing in Jesus, and agreeing with Jesus, that you evidently were worth dying for.