ISB ~ 1 Corinthians 15 v8

appeared also to me:Paul both saw the risen Christ and received a missionary mandate from him (Acts 9:1-15). His encounter with the resurrected Jesus in visible glory was unique compared with the other apostles, who saw Jesus alive before his Ascension into heaven (CCC 659). Paul felt undeserving of an apostolic mission in light of his former hostility to the Church (1 Cor 15:9; Eph 3:8; 1 Tim 1:15-16).