I handed on to you as of first importance what I in turn had received: that Christ died for our sins in accordance with the scriptures, 4and that he was buried, and that he was raised on the third day in accordance with the scriptures, 5and that he appeared to Cephas, then to the twelve. 6Then he appeared to more than five hundred brothers and sisters at one time, most of whom are still alive, though some have died. 7Then he appeared to James, then to all the apostles. 8Last of all, as to one untimely born, he appeared also to me. 9For I am the least of the apostles, unfit to be called an apostle, because I persecuted the church of God. 10But by the grace of God I am what I am, and his grace toward me has not been in vain. On the contrary, I worked harder than any of them – though it was not I, but the grace of God that is with me. 11Whether then it was I or they, so we proclaim and so you have come to believe.
1 Corinthians 15:3-11