Jesus said that his family was like salt. Salt in Jesus' day was a very important commodity. It was a food preservative, a spice and -- given the hot dry climate -- a key to proper hydration. The lack of salt could result in a bland diet, but also disease or possibly death.
So, what if salt lost all those properties that made it so valuable? It would become just another variety of dirt. Not worth anything.
What is salt in God's family? What is this quality that preserves and enlivens? Is it our morality? Is it our proclamation of the gospel? Is it manifestations of the Spirit? Is it miracles and healing? Is it love? Is it all of the above?
Looking at the church in the US -- loss of interest, loss of respect, local churches closing, young people going to college and never setting foot in a church again -- there seems to be a lack of saltiness.