Years ago, a major league draft coordinator sent out a message to all professional baseball employees. He used the scripture “You are the salt of the earth” (Matthew 5:13a) to encourage them not to become lazy but to understand their purpose. As a Christian and a person who chooses salt over sugar every time, I find this metaphor intriguing.

This past Christmas, I received rechargeable salt and pepper shakers. Just push a button and out comes the salt or pepper. Automatic. Easy. On top of that, they are pretty, so they became a centerpiece on my kitchen table. Of course, they are of no use if they just sit there and do nothing. They must be poured out to be of any good at all.

Matthew 5:13 reminds us of how salt is to be used: “You are the salt of the earth. But if the salt loses its saltiness, how can it be made salty again? It is no longer good for anything, except to be thrown out and trampled underfoot.” Salt, left in its shaker, is a waste of…well, salt.

When I was four years old, my mother was unable to wake me up. I was rushed via ambulance to K.U. Medical Center where I was diagnosed with a “calcium deposit on my adrenal gland.” To this day, I have no idea what that means except for years after, I craved salt. My favorite snack was a glass of ice cubes covered in salt. I even gave that up for Lent one year…and thought I would die. Addictions are like that.

So, why does Jesus talk about salt? Think of its functions. Most importantly, it adds flavor. If you, like me, have ever made cookies or oatmeal and forgotten to add salt, you know what I mean. Just a teaspoon full makes all the difference. As a Christian, I am to add flavor. Sometimes, I do. Other times, not so much. Being a teacher reminds me that some days that objective is easier than others. Yesterday was that kind of day.

A student decided he “couldn’t” do the assignment. He just needed “to walk.” And “talk.” At first, I thought it might be his way of dealing with the recent death of one of his classmates. Everyone grieves in a different way, and the administration had asked that we be understanding towards students who might be suffering, but when he became disruptive, I explained that his work was due at the end of the hour, so he needed to sit still, be quiet and complete it. He admitted he had not taken his A.D.D. meds. Instead, he had enjoyed three energy drinks. Other students, trying to concentrate, were frustrated with him.

This was not a grieving student; it was an annoying one. As the minutes passed, I lost any desire to add metaphorical salt to the situation. Instead, I “peppered” him with warnings (not effective teaching, I admit). He continued his behavior into his next class where he was removed from the room.

Jesus never wasted words. In his day, salt was valuable as a preservative. Roman soldiers sometimes were paid with salt rations, hence the expression, “they are not worth their salt.” We are valuable…but not by ourselves. Salt is not the meal. It flavors the meal. So it is for the Christian. We are the salt; Jesus is the food. We exist not for ourselves, but to add something to others’ lives. If we are not making the Christian life appear flavorful, desirable, we have lost our purpose.

And get this–we don’t have to be obnoxious in sharing our faith. A little bit goes a long way. The trouble is, too many Christians are not willing to give even that much.