1 Corinthians 15:1-11 (ESV)
1 Now I would remind you, brothers, of the gospel I preached to you, which you received, in which you stand, 2 and by which you are being saved, if you hold fast to the word I preached to you—unless you believed in vain.
3 For I delivered to you as of first importance what I also received: that Christ died for our sins in accordance with the Scriptures, 4 that he was buried, that he was raised on the third day in accordance with the Scriptures, 5 and that he appeared to Cephas, then to the twelve. 6 Then he appeared to more than five hundred brothers at one time, most of whom are still alive, though some have fallen asleep. 7 Then he appeared to James, then to all the apostles. 8 Last of all, as to one untimely born, he appeared also to me. 9 For I am the least of the apostles, unworthy to be called an apostle, because I persecuted the church of God. 10 But by the grace of God I am what I am, and his grace toward me was not in vain. On the contrary, I worked harder than any of them, though it was not I, but the grace of God that is with me. 11 Whether then it was I or they, so we preach and so you believed.
WHAT IS THE GOSPEL?
Jesus Christ is the gospel. The good news is revealed in His birth, life, death, resurrection and ascension. Christ's crucifixion is the heart of the gospel; His resurrection is the power of the gospel and His ascension is the glory of the gospel. Christ's death is a substitutionary and propitiatory sacrifice to God for our sins. It satisfies the demands of God's holy justice and appeases His holy wrath. It also demonstrates His mysterious love and reveals His amazing grace. Jesus Christ is the only mediator between God and man. There is no other name by which men must be saved. At the heart of all sound doctrine is the cross of Jesus Christ and the infinite privilege that redeemed sinners have of glorifying God because of what He has accomplished. Therefore, we want all that takes place in our hearts, churches and ministries to proceed from and be related to the gospel.
The word gospel simply means “good news.” The central message of the Bible is the gospel, or good news, about the person and work of Jesus Christ. In 1 Corinthians 15:1–4, Paul provides the most succinct summary of the gospel: the man Jesus is also God, or Christ, and died on a cross in our place, paying the penalty for our sins; three days later He rose to conquer sin and death and give the gift of salvation to all who believe in Him alone for eternal life.