As Christians our lives matter as much or more than our words. If we speak of compassion we will only be listened to if we live with compassion.
Our lives are a picture which shows others more than our words. We must be before we can credibly speak.
Once we are someone then natural when we speak people will have more interest in listening. In our age of self promotion authentic living is Christianity's opportunity to speak to the world.
We must be people who's lives need no marketing.