Matthew Henry Commentary 2 Corinthians 7:1-4

"Having therefore these promises, beloved, let us cleanse ourselves from all defilement of flesh and spirit, perfecting holiness in the fear of God. Open your hearts to us: we wronged no man, we corrupted no man, we took advantage of no man. I say it not to condemn [you]: for I have said before, that ye are in our hearts to die together and live together. Great is my boldness of speech toward you, great is my glorying on your behalf: I am filled with comfort, I overflow with joy in all our affliction." — 2 Corinthians 7:1-4 (ASV)

The promises of God are strong reasons for us to follow after holiness; we must cleanse ourselves from all filthiness of flesh and spirit. If we hope in God as our Father, we must seek to be holy as he is holy, and perfect as our Father in heaven. His grace, by the influences of his Spirit, alone can purify, but holiness should be the object of our constant prayers.

If the ministers of the gospel are thought contemptible, there is a danger that the gospel itself may also be despised; and though ministers must not flatter anyone, yet they must be gentle towards all. Ministers may look for esteem and favour when they can safely appeal to the people that they have corrupted no one by false doctrines or flattering speeches; that they have defrauded no one; nor sought to promote their own interests so as to harm anyone.

It was affection for them that made the apostle speak so freely to them, and caused him to speak proudly of them, in all places and on all occasions.