Here's Molly (hi Molly). She's going to be here for a couple of weeks. She's the only one and gets along well with my dogs and cats.
People are like this with God's grace. They simply can not comprehend that following the rules isn't what pleases God. Being good doesn't do it either. Going to church and taking communion doesn't, even those are good things to do.
What pleases God? Giving up.
Yep. That's it. We all do wrong, whether big or small, we can never fully be perfect. When we admit to this, admit that Jesus paid the price for our sins, when we give up walking perfectly with our Lord, that's when God's grace floods us. No more burden of sin, or burden to follow the rules perfectly. We admit our flaws, and the Lord rebuilds us, if we let him.
It's liberating and we can relax in the home our great God offers us. Of course we don't deserve it, but it's offered to us nonetheless. It's up to us to accept it humbly an gratefully.