The Gospel of Jesus Christ is found in 1 Corinthians 15:1-4 (KJV):

15:1: “Moreover, brethren, I declare unto you the gospel which I preached unto you, which also ye have received, and wherein ye stand;”

15:2: “By which also ye are saved, if ye keep in memory what I preached unto you, unless ye have believed in vain.”

15:3: “For I delivered unto you first of all that which I also received, how that Christ died for our sins according to the scriptures;”

15:4: “And that he was buried, and that he rose again the third day according to the scriptures:”