Here is the Gospel Paul preached to the Gentile church in Corinth, from his own pen:
1 Cor 15:1 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.
3 For what I received I passed on to you as of first importancea : 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,...
Was your question serious, or rhetorical? Really?
Just wanted to make sure you knew what the gospel of the grace of God is. Do you know what the mystery is that Paul speaks of?