1 Corinthians 15:9-11

9 For I am the least of the apostles and am not sufficient 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 which [was] toward me has not been without fruit, but I labored more abundantly than all of them; yet not I, but the grace of God with me.

11 Therefore whether [it was] I or they, so we preach, and so you believed.