On the back is a cross with the verse
John 15:1-6

"I am the true vine. My Father is the gardener. He cuts off every branch joined to me that does not bear fruit. He trims every branch that does bear fruit. Then it will bear even more fruit.
You are already clean because of the word I have spoken to you. Remain joined to me, and I will remain joined to you. No branch can bear fruit by itself. It must remain joined to the vine. In the same way, you can't bear fruit unless you remain joined to me. "I am the vine. You are the branches. If anyone remains joined to me, and I to him, he will bear alot of fruit. You can't do anything without me. If anyone does not remain joined to me, he is like a branch that is thrown away and dries up. 
Branches like those are picked up. The are thrown into the fire and burned.
John 15:1-6