What I am (ho eimi). Not, who (hos), but what (ho), neuter singular. His actual character and attainments. All “by the grace of God” (chariti theou).
I laboured more abundantly than they all (perissoteron autōn pantōn ekopiasa). This is sober fact as shown by the Acts and Paul’s Epistles. He had tremendous energy and used it. Genius is work, Carlyle said. Take Paul as a specimen.