“The parable means this: The seed is God's word.
The seed on the path are those who hear, but then the devil comes and steals the word from their hearts so that they won't believe and be saved.
The seed on the rock are those who receive the word joyfully when they hear it, but they have no root. They believe for a while but fall away when they are tempted.
As for the seed that fell among thorny plants, these are the ones who, as they go about their lives, are choked by the concerns, riches, and pleasures of life, and their fruit never matures.
The seed that fell on good soil are those who hear the word and commit themselves to it with a good and upright heart. Through their resolve, they bear fruit.