What is the Gospel
The Apostle Paul says in the book of Romans that salvation is the power of God unto salvation to every one that believeth; to the Jew first, and also to the Greek. Only through the blood of Christ can we be saved, through faith in Jesus.
All people are sinners in that they disobey God. Sin is choosing to go your own way and do your own thing as opposed to being obedient to God. (Isaiah 53:6 | Romans 3:10)
Sin forms a barrier that prevents you from entering into unbroken fellowship with God, Who is holy. As an unholy sinner, you can’t have fellowship with God. The payment for your sin is death and separation from God. You are headed for a Christless eternity that the Bible calls Hell. (Isaiah 59:2 | Romans 3:23)
People often think that through their efforts they can overcome the sin barrier between themselves and God. That isn’t true. There’s nothing you can do to restore the broken relationship with God. You can’t earn God’s salvation. (Ephesians 2:8-9 | Titus 3:5 | Romans 4:4-5)
What you cannot do for yourself, Jesus Christ has done for you! Your sin is a barrier between you and God. But the Good News is that Jesus died on the cross for you and then rose from the dead to demonstrate that His payment was acceptable to God. By taking your punishment on Himself, Jesus made a way for you to have a relationship with God. (1 Peter 2:23 | Romans 5:8 | 2 Corinthians 5:21 | Romans 10:9)
Faith is trusting in what Jesus has done for you rather than trusting your own efforts to restore fellowship with God. It is complete reliance on Christ to put you in right relationship with God, allowing Him to live His life through you. It also involves repentance or genuine sorrow for sin and willingness to turn away from sin. (John 14:6 | Acts 16:31 | Romans 10:9-10)