2 Corinthians 10:6-11

And after you have become fully obedient, we will punish everyone who remains disobedient. Look at the obvious facts. Those who say they belong to Christ must recognize that we belong to Christ as much as they do. I may seem to be boasting too much about the authority given to us by the Lord. But our authority builds you up; it doesn’t tear you down. So I will not be ashamed of using my authority. I’m not trying to frighten you by my letters. For some say, “Paul’s letters are demanding and forceful, but in person he is weak, and his speeches are worthless!” Those people should realize that our actions when we arrive in person will be as forceful as what we say in our letters from far away.