For we are glad when we are weak ... - We rejoice in your welfare, and are willing to submit to self-denial and to infirmity if it may promote your spiritual strength. In the connection in which this stands it seems to mean, “I am content to appear weak, provided you do no wrong; I am willing not to have occasion to exercise my power in punishing offenders, and had rather lie under the reproach of being actually weak, than to have occasion to exercise my power by punishing you for wrongdoing; and provided you are strong in the faith and in the hope of the gospel, I am very willing, nay, I rejoice that I am under this necessity of appearing weak.”
And this also we wish - I desire this in addition to your doing no evil.
Even your perfection - The word used here (κατάρτισις katartisis) occurs nowhere else in the New Testament, though the verb from which it is derived (καταρτίζω katartizō) occurs often; Matthew 4:21; Matthew 21:16; Mark 1:19; Luke 6:40; Romans 9:22; 1 Corinthians 1:10; 2 Corinthians 13:11; Galatians 6:1; 1 Thessalonians 3:10, et al.; see the note on 2 Corinthians 13:11. On the meaning of the word see Romans 9:22. The idea of restoring, putting in order, fitting, repairing, is involved in the word “always,” and hence, the idea of making perfect; that is, of completely restoring anything to its proper place. Here it evidently means that Paul wished their entire reformation - so that there should be no occasion for exercising discipline. Doddridge renders it, “perfect good order.” Macknight, “restoration.” For this restoration of good order Paul had diligently labored in these epistles; and this was an object near to his heart.