Not long ago, when I was in the toy section at Target, I noticed that some of the toys included “demo batteries.”
For example, according to message on the box of a Black & Decker Junior Chainsaw, “Batteries included for ‘Try Me’ purposes. If performance diminishes after purchase, replace with fresh batteries.”
In other words, don’t expect this toy to last long on these demo batteries.
A life without prayer is a life attempting to run on a demo battery.