The apostle having asserted his own sincerity and upright conversation in the former verse, he doth in this verse make his appeal to the consciences of the Corinthians for his justification. It is a good demonstration of our uprightness, when we can not only appeal to God as touching our sincerity, but dare appeal to the consciences of men; for if through prejudice they will not with their mouths vouch for our integrity, yet secretly with their conscience they cannot but bear witness to it.
Observe, 2. The apostle's having declared that he had his testimonials not only from his own conscience, but from theirs also; he adds, that he trusted this would hold and continue even to the end, that is, to the end both of his and their lives.
As if the apostle had said, "My conversation hath hitherto been acknowledged by you to be sincere and upright; and I hope, as you shall never see it otherwise by me, so you will persevere and continue in your good opinion and right judgment concerning me to the end of your and my life."