The Gospel is called the ‘good news’ because it addresses the most serious problem that you and I have as human beings, and that problem is simply this: God is holy and He is just, and I’m not. And at the end of my life, I’m going to stand before a just and holy God, and I’ll be judged.
In the beginning God created all things very good (Genesis 1:31). Man chose to rebel against God and brought sin into the world and now all men are born into sin and by their nature only sin. Mankind is fallen and depraved in their thoughts, words, and deeds and will only choose, by their own choice, to sin and rebel against the true and living God. Man will never seek God or choose to obey God (Romans 3:10-11). Although mankind does good deeds by the common grace of God, every intention of their heart is evil continuously (Genesis 6:5).
We all fall when we look into the light of God's law. So because God is holy and just, He must punish law-breakers. If God let guilty criminals go then He would not be just or loving, so God punishes sin. The penalty of sin is death (Romans 6:23) in your body and eternal death, Hell, for your soul. It looks as if all men are condemned because all have sinned (Romans 3:23) and there is no way out.
The good news of the Gospel is that Jesus lived a life of perfect righteousness, of perfect obedience to God, not for His own well-being but for His people. God never left man to perish but sent him a way out of his sin and misery and penalty that he deserves. God sent His Son, Jesus Christ, to die on a wooden cross in the place of man. God crushed His own Son in our place (Isaiah 53:10). Jesus took our sin upon Himself and God poured His wrath out on Him as a penalty for our sin and therefore satisfied the justice of God. Jesus rose from the dead three days later because death couldn't hold him. He now sits at the right hand of God and will come back to judge the world. He has done for me what I couldn’t possibly do for myself.
How do I get it? The Bible makes it clear that we are justified not by our works, not by our efforts, not by our deeds, but by faith and by faith alone (Ephesians 2:8-9). The only way you can receive the benefit of Christ’s life and death is by putting your trust in Him and in Him alone. Jesus is the Savior of mankind. The bible says to escape Hell and receive the gift of everlasting life, man must see his sin and repent of it and put his faith alone in Jesus Christ to save him. By asking God to forgive you, repenting of your sins and trusting Jesus Christ, God will save you from the penalty of sin and give you what you don't deserve, Heaven. Because of what Jesus did on the cross, God will forgive your sin, account you as righteous and bring you to heaven when you die.
Acts 13:38 Therefore, my friends, I want you to know that through Jesus the forgiveness of sins is proclaimed to you