1 Corinthians 15 is the best place to begin mapping an understanding of the gospel. Here Paul comes pretty close to defining the word gospel. The gospel is to announce good news about the key events in the life of Jesus and to shout aloud the Story of Jesus Christ as the saving news of God. The gospel though is intimately tied to Israel’s Story as found in the scriptures of the Old Testament. Salvation – the robust salvation of God – is the intended result of the gospel story about Jesus Christ that completes the story of Israel in the Old Testament.
1 Corinthians 15 (TNIV)
1 Now, brothers and sisters, I want to remind you of the gospel I preached to you, which you received and on which you have taken your stand. 2 By this gospel you are saved, if you hold firmly to the word I preached to you. Otherwise, you have believed in vain. (15:1-2)
3 For what I received I passed on to you as of first importance: that Christ died for our sins according to the Scriptures,
4 that he was buried,
that he was raised on the third day according to the Scriptures, 5 and that he appeared to Cephas, and then to the Twelve.(15:3-5)
PART C20 But Christ has indeed been raised from the dead, the firstfruits of those who have fallen asleep. 21 For since death came through a human being, the resurrection of the dead comes also through a human being. 22 For as in Adam all die, so in Christ all will be made alive. 23 But in this order: Christ, the firstfruits; then, when he comes, those who belong to him. 24 Then the end will come, when he hands over the kingdom to God the Father after he has destroyed all dominion, authority and power. 25 For he must reign until he has put all his enemies under his feet. 26 The last enemy to be destroyed is death. 27 For he “has put everything under his feet.” Now when it says that “everything” has been put under him, it is clear that this does not include God himself, who put everything under Christ. 28 When he has done this, then the Son himself will be made subject to him who put everything under him, so that God may be all in all. (15:20-28)