Moreover, brethren, I declare unto you the gospel which I preached unto you, which also ye have received , and wherein ye stand ;
By which also ye are saved , if ye keep in memory what I preached unto you, unless ye have believed in vain.
References for 1 Corinthians 15:2
For I delivered unto you first of all that which I also received , how that Christ died for our sins according to the scriptures;
And that he was buried , and that he rose again the third day according to the scriptures:
And that he was seen of Cephas, then of the twelve:
After that, he was seen of above five hundred brethren at once; of whom the greater part remain unto this present, but some are fallen asleep .
After that, he was seen of James; then of all the apostles.