Such an understanding is, however, foreign to the text. The Lord clearly indicates in verse 12 that Satan endeavors to prevent people from believing and being saved. The Lord then goes on to say that Satan was unsuccessful in preventing the rocky-soil people from believing, and hence from being saved. In verse 6 we learn that the seed sown on the rocky soil sprang up. Only a seed which germinates can spring up.
Germination is proof of life.
The issue is thus one of growth and fruitfulness, not birth and life. We are left with two options. Either these saved people lost their salvation when they fell away from the faith, or they did not. This text warns us to cultivate our faith. We need to read the Bible regularly.