In this life, you only get one chance. If you screw it up, you don’t get to try again, despite what Super Mario Bros 3 may tell you. Such is the way of God. He is righteous and just and as a righteous and just God, he requires absolute perfection. And that’s how the world was created, perfectly. And then sin entered the world. Notice that word; entered. Sin was not a part of this world. Sin entered the world. And it tainted everything. And because we have sinned, we are rightly condemned. We don’t get to try again. We blew it. We blew it without even trying. That’s how tainted we are.
But something happened. One man somehow made it through life without sin. The taint didn’t touch him as it had touched all else. And then, when he was executed, he took the punishment for all of our sin for all time all at once. That man was God wrapped in human flesh, the Son Jesus Christ. And with that sacrifice, God just looks the other way from your sins and simply says, “Nope. Didn’t happen.”
Christ paid the price for your sins because you couldn’t. You don’t get any second chances and through the grace and mercy of God, you don’t need one.