This verse is one that needs to be read over and over by Christians today. It's funny how Paul had to tell the Romans to stop "condemning such people," and yet, 2,000 years later, it still applies today. The first verse of the 2nd chapter of Romans, basically the first thing he says after his greeting, is to tell them to cut it out. The last sentence in verse 4 is the key, though: "Can't you see that his kindness is intended to turn you from your sin?" We need to try to be more like God... be wonderfully kind, tolerant and patient with "such people." Isn't that how we'd want God to deal with us on judgment day?

Romans 2:1 and Romans 2:4