Are you saying you are perfect? If you are, then you're the best person on the planet. To not be a sinner means you've never broken any Law of God? Have you ever lied, cheated, or stolen? If you have, then you have broken His law and are a sinner whether you think so or not. The laws of God have punishments (a law without a punishment is only a slogan). As a sinner, you are separated from God (Isaiah 59:2). However, God loves you enough to want you to be with Him. He sent Jesus (1 John 4:10) to pay for the sins of His people by dying on the cross and paying that penalty which is death (Rom. 6:23). So, the only way to have your sins forgiven is to put your trust in Jesus and the sacrifice He made (Rom. 10:9-10). Otherwise, you will have to face Him on your own on the day of Judgment. After all, the Bible says that everyone has sinned (Rom. 5:12). That means you, too.