II Corinthians 10:2, 6-11

But I beg you that when I am present I may not be bold with that confidence by which I intend to be bold against some, who think of us as if we walked according to the flesh.

and being ready to punish all disobedience when your obedience is fulfilled. Do you look at things according to the outward appearance? If anyone is convinced in himself that he is Christ’s, let him again consider this in himself, that just as he is Christ’s, even so we are Christ’s. For even if I should boast somewhat more about our authority, which the Lord gave us for edification and not for your destruction, I shall not be ashamed— lest I seem to terrify you by letters. “For his letters,” they say, “are weighty and powerful, but his bodily presence is weak, and his speech contemptible.” Let such a person consider this, that what we are in word by letters when we are absent, such we will also be in deed when we are present.