The seeds that fell among the thorns are those who hear, but as they go on their way, they are choked by the worries, riches, and pleasures of this life, and their fruit does not mature.
KJV
And that which fell among thorns are they, which, when they have heard, go forth, and are choked with cares and riches and pleasures of [this] life, and bring no fruit to perfection.
ASV
And that which fell among the thorns, these are they that have heard, and as they go on their way they are choked with cares and riches and pleasures of this life, and bring no fruit to perfection.