For if any Macedonians come with me and learn that you are not prepared, we, not to mention you, will be ashamed for having been so over confident.

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.