You people are looking [merely] at the appearance of things [or, "You should look at what is obvious!" In either case, it suggests they were misjudging Paul's ministry]. If any person is confident within himself that he belongs to Christ, he should reflect on this again: We are just as much Christ's [servants] as he is.

But all of us [Christians], with unveiled faces, see the Lord's splendor reflected, as [though we were] looking in a mirror, and [so] are being transformed into His likeness in ever-increasing splendor. This is [the work] of the Lord, [who is] the Holy Spirit.

since you are looking for proof that Christ is speaking through me. Christ is not weak in His dealing with you, but is powerful among you. [Note: Paul probably refers to the positive effects of his ministry there in Corinth].