1 Corinthians 6:11

And such were some of you: but ye are washed, but ye are sanctified, but ye are justified in the name of the Lord Jesus, and by the Spirit of our God (KJV)

Then: Paul shifts from anger with the Corinthians' actions to worry about their eternal souls. They're part of the kingdom. They're filled with his Holy Spirit. They've received his promise of justification ... yet life is not good. Their souls are in peril. Paul wants to help them hold on, repent, and reclaim the joy of walking forward in faith. They must not dally with misdeeds. The Corinthians need reminders of their former conversion just as much as Paul needs to give them. Surely, as long as they listen, there is hope.

Now: No one knows why others can immediately see and recognize a fellow Christian's difficulty with some particular sin, yet the sinner is blinded. Jesus teaches us to take the beam out of our own eye before concentrating on the speck of sin in someone else. Like the Corinthians, we often cannot see the depth or extent of a problem. Like the Corinthians we don't like confronting our defects. Thankfully, the Lord doesn't try to overwhelm us with spiritual change all at once. He addresses one area at a time by sending friends, teachers and pastors. Through friendly conversations, sermons, biblical passages and prayer, he patiently shepherds our souls. He doesn't give up. Neither should we.

Extra Source: Commentary on the Whole Bible (Acts to Revelation) by Matthew Henry, online see
http://www.ccel.org/ccel/henry/mhc6.iCor.xi.html