“Therefore, the gospel is the truth that we are all sinners or criminals before God, and under the sentence of eternal death or separation from God and all that is good. In his love for us, God the Father sent God the Son to earth to become a man. Jesus was born without a sin nature, and lived a sinless life. He allowed himself to be crucified, and as he hung on the cross, God the Father took all of my sins, put them on Jesus and punished him in my place.
Jesus took the wrath of God for me, and he died. His body was placed in a tomb, and on the third day he came back from the dead, never to die again. God in his love and grace has overcome our two enemies of sin and death, and those who acknowledge to Jesus that they are sinners, and trust him to save them from eternal condemnation are forgiven their sins and given the gift of life eternal with God.
Paul said, “For I am not ashamed of the gospel, for it is the power of God for salvation to everyone who believes, to the Jew first and also to the Greek.” (Romans 1:16)
Paul was not ashamed of the gospel, because he knew that God works his power through the gospel to take people from death to life. That is why he said it is “of first importance,” and it should be of first importance in the ministry of every pastor”