Thanks Pastor Roger!

I need a little help.  I am trying to find a scripture that talks about how a Christian should be known by their conduct.  I am looking for a scripture to support the idea that a non-Christian should be able to see something different about us.  I have 1 Peter 3:15 "...Always be prepared to give a defense to everyone who asks you to explain the hope you have. "  but I thought there was another scripture that was more specific to my need. 

Thanks so much!