Therefore whether it were I or they, so we preach, and so ye believed.
1 Corinthians 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;
1 Corinthians 15:4
And that he was buried, and that he rose again the third day according to the scriptures:
1 Corinthians 2:2
For I determined not to know any thing among you, save Jesus Christ, and him crucified.