"Therefore I write these things being absent, lest being present I should use sharpness, according to the authority which the Lord has given me, for edification and not for destruction." 2 Corinthians 13:10
Paul was apparently tempted to "tell off" the church at Corinth a time or two. In fact, he said it was better for him to write the Corinthians from a distance, rather than be with them in person, due to the fact that he might be tempted to "use sharpness" with them. He goes on to say that he realizes his authority (calling) was for edification of the Church (building it up) and not destruction (tearing it down).
What a good reminder for pastors! Even when we're disappointed or frustrated with our people, even when correction is necessary, we must always remember our calling is to build God's people up. Not to use words or actions in the flesh to tear them down.