1-corinthians 15:11

Whether it were I or they - All the apostles of Christ agree in the same doctrines; we all preach one and the same thing; and, as we preached, so ye believed; having received from us the true apostolical faith, that Jesus died for our sins, and rose again for our justification; and that his resurrection is the pledge and proof of ours. Whoever teaches contrary to this does not preach the true apostolic doctrine.

Paul was the last of the primitive apostles. The primitive apostles were those who had seen Christ, and got their call to the apostolate immediately from himself. There were many apostles after this time, but they were all secondary; they had a Divine call, but it was internal, and never accompanied by any vision or external demonstration of that Christ who had been manifested in the flesh.

Therefore, whether it were I or they - I or the other apostles. It is comparatively immaterial by whom it was done. The establishment of the truth is the great matter; and the question by whom it is done is one of secondary importance.

So we preach - So we all preach. We all defend the same great doctrines; we all insist on the fact that the Lord Jesus died and rose; and this doctrine you all have believed. This doctrine is confirmed by all who preach; and this enters into the faith of all who believe. The design of Paul is to affirm that the doctrines which he here refers to were great, undeniable, and fundamental doctrines of Christianity; that they were proclaimed by "all" the ministers of the gospel, and believed by all Christians. They were, therefore, immensely important to all; and they must enter essentially into the hopes of all.

15:11 Whether I or they, so we preach - All of us speak the same thing.