Luke 8:8, 13

Still other seed fell on fertile soil. This seed grew and produced a crop that was a hundred times as much as had been planted!” When he had said this, he called out, “Anyone with ears to hear should listen and understand.”

The seeds on the rocky soil represent those who hear the message and receive it with joy. But since they don’t have deep roots, they believe for a while, then they fall away when they face temptation.