And we have sent [i.e., are sending] with him the brother who is praised throughout all the churches for [his work in] preaching the Gospel [Note: This "brother" cannot be identified with any certainty].

And we have sent [i.e., are sending] with them our brother [Note: This is a different person from the one mentioned in verse 18], who has often proven his diligence to us in many ways, and is now proving to be even more diligent because of the great confidence he has in you [i.e., confidence in the Corinthians completing their collection for the poor].