This is a great verse, and one that our church is hard at teaching in the next few months. We are teaching that we must show our love to everyone; that this is the one most important thing any Christian must do.
As Christians we must show the love that outflows freely. From our day to day actions, to our speech, we must remember that people are watching, and if we want to gain trust, this is the way to do it. We show love best when we care for others, especially those that aren't easy to love.
Let's put our self interests aside and see what we can do for someone else today!