The word Gospel means good news. The good news is about our Lord Jesus Christ offered to all people everywhere (Matthew 28:19-20; Mark 16:15; Luke 24:46-47). God sent his Son to die for our sins, and Christ was raised from the dead according to the Scripture (1 Corinthians 15:1-4). Jesus Christ is the good news.
The good news is about the forgiveness of all our sins and life everlasting, through Jesus Christ our Lord. This good news is offered freely to all. It comes as the gift of God. "For by grace are you saved through faith, and that not of yourselves; it is the gift of God" (Ephesians 2:8).
The good news is about eternal life for all who believe through the resurrection of Jesus our Lord (Romans 6:23; 10:9). Only the death of Jesus Christ at the cross can save us from the condemnation of our sins. The resurrection of Christ proves that Jesus is the Son of God by the power of the Holy Spirit (Romans 1:1-4).
The good news of Jesus Christ is all spiritual blessings for us. "Blessed be the God and Father of our Lord Jesus Christ, who has blessed us with every spiritual blessing in the heavenly places in Christ" (Ephesians 1:3). Every blessing God has for us comes through faith in Jesus Christ our Lord.