1 Corinthians 15:9-12
New King James Version
9 For I am (A)the least of the apostles, who am not worthy to be called an apostle, because (B)I persecuted the church of God. 10 But (C)by the grace of God I am what I am, and His grace toward me was not in vain; but I labored more abundantly than they all, (D)yet not I, but the grace of God which was with me. 11 Therefore, whether it was I or they, so we preach and so you believed.