Luke 8:9

And some fell among thorns; and the thorns sprang up with it, and choked it.

And other fell on good ground, and sprang up, and bare fruit an hundredfold. And when he had said these things, he cried, He that hath ears to hear, let him hear.

And he said, Unto you it is given to know the mysteries of the kingdom of God: but to others in parables; that seeing they might not see, and hearing they might not understand.

Now the parable is this: The seed is the word of God.