1 Corinthians 15:9-11

Young's Literal Translation

⁹ for I am the least of the apostles, who am not worthy to be called an apostle, because I did persecute the assembly of God,

¹⁰ and by the grace of God I am what I am, and His grace that [is] towards me came not in vain, but more abundantly than they all did I labour, yet not I, but the grace of God that [is] with me;

¹¹ whether, then, I or they, so we preach, and so ye did believe.