The Gospel simply is that Jesus came and died for our sins and after 3 days rose to life again. 1 Cor 15:3-5 “3 For I passed on to you as most important what I also received: 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, then to the Twelve.”