2 Corinthians 10:6-11

being ready to punish every act of disobedience, when your own obedience [as a church] is complete. You are looking [only] at the outward appearance of things. If anyone is confident that he is Christ’s, he should reflect and consider this, that just as he is Christ’s, so too are we. For even though I boast rather freely about the authority the Lord gave us for building you up and not for destroying you, I will not be ashamed [of the truth], nor do I want to seem to be trying to frighten you with my letters; for they say, “His letters are weighty and forceful and impressive, but his personal presence is unimpressive and his speech contemptible [of no account].” Let such people realize that what we say by word in letters when we are absent, is the same as what we are in action when present.