Rediscovering Evangelism #2: Relationships

Statistics show that 85-90% of new believers in Jesus Christ made their commitment to follow Jesus as the Forgiver and Leader of their lives due to a family member or friend who cared enough to share the good news with them. Jesus said: "You are the salt of the earth...you are the light of the world" (Matthew 5:13-14). What, exactly, do these metaphors of salt and light teach us about evangelism?