The seeds that fell on rocky ground stand for those who hear the message and receive it gladly. But it does not sink deep into them; they believe only for a while but when the time of testing comes, they fall away.
Herod was afraid of John because he knew that John was a good and holy man, and so he kept him safe. He liked to listen to him, even though he became greatly disturbed every time he heard him.
Simon himself also believed; and after being baptized, he stayed close to Philip and was astounded when he saw the great wonders and miracles that were being performed.