As for the part in the rich soil, this is people with a noble and generous heart who have heard the word and take it to themselves and yield a harvest through their perseverance.
Lk.8:15
Jesus describes who the good soil in his parable of the sower represents. People of noble and generous hearts.
NOBLE: Showing fine personal qualities and high moral principles.
GENEROUS: A readiness to give more than is necessary or expected.
HEART: Innermost part of something.
Jesus could be describing himself here. But he's not. He's describing the man he is calling me to be.
My wife doesn't like it when I describe myself as a reformed dirt bag. "Power of words Mike", she says. Perhaps the moniker becomes palatable in the light of this calling from Jesus for me to become "good dirt", a man of noble and generous heart.
Jesus, you know the rocks and weeds in my life. Come root up, pull out and then cultivate.