Therefore whether it were I or they, so we preach, and so ye believed.
Whether it were I or they (the apostles) - who "laboured more abundantly" (1 Corinthians 15:10), the subject of our preaching was the truth stated in 1 Corinthians 15:3-4.
Related Commentaries of 1 Corinthians 15:11
1 Corinthians 15:11
11 Therefore whether it were I or they, so we preach, and so ye believed.