And last of all He was seen of me also, as of one born out of due time.
For I am the least of the apostles, that am not meet to be called an apostle, because I persecuted the church of God. But by the grace of God I am what I am: and His grace which was bestowed upon me was not in vain; but I laboured more abundantly than they all: yet not I, but the grace of God which was with me.
Therefore whether it were I or they, so we preach, and so ye believed.”   1 Corinthians 15:8-11

REFERENCES: 1 Corinthians 15; Acts 1:15-26; 9; Galatians 2:8; Ephesians 3:7; Philippians 2:13; 4:13