1 Corinthians 15:1-11(ESV)  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 importance: 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. ⁶ Then he appeared to more than five hundred brothers at one time, most of whom are still alive, though some have fallen asleep.
⁷ Then he appeared to James, then to all the apostles. ⁸ Last of all, as to one untimely born, he appeared also to me. ⁹ For I am the least of the apostles and do not even deserve to be called an apostle, because I persecuted the church of God. ¹⁰ But by the grace of God I am what I am, and his grace to me was not without effect. No, I worked harder than all of them—yet not I, but the grace of God that was with me.
¹¹ Whether, then, it is I or they, this is what we preach, and this is what you believed.