2 Corinthians 7:1, 9, 10

Because we have these promises, dear friends, let us cleanse ourselves from everything that can defile our body or spirit. And let us work toward complete holiness because we fear God. Now I am glad I sent it, not because it hurt you, but because the pain caused you to repent and change your ways. It was the kind of sorrow God wants his people to have, so you were not harmed by us in any way. For the kind of sorrow God wants us to experience leads us away from sin and results in salvation. There’s no regret for that kind of sorrow. But worldly sorrow, which lacks repentance, results in spiritual death. (2 Corinthians 7:1, 9, 10 NLT)