A "Sinner" is a person who has committed a sin. Sin is a transgression of the law of God. The Bible says that all have sinned and fallen short of the glory of God (Romans 3:23). This means that we have all done things that are against God's law. We have all broken His commandments.
There are many different types of sins. The Bible lists some of them in Galatians 5:19-21.
The Bible says that the wages of sin is death (Romans 6:23). This means that the punishment for sin is death. We all deserve to die because we have all sinned.
But God is a merciful God. He does not want us to die. He wants us to be saved. That's why He sent His Son, Jesus Christ, to die for us. Jesus died on the cross to pay the penalty for our sins. He took our punishment upon Himself.
If we repent of our sins and believe in Jesus Christ, we will be forgiven. We will be saved from the punishment of sin. We will have eternal life with God.
Are you a sinner? Have you broken God's law? If so, don't despair. God loves you and wants to forgive you. Repent of your sins and believe in Jesus Christ. He will save you from the punishment of sin. He will give you eternal life.
Don't wait any longer. Repent of your sins and believe in Jesus Christ today. He is the only way to salvation.