1Cor 15:8-10

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.