ὁ σπείρων τὸν λόγον σπείρει.
Mark said the seeds were the word (ὁ σπείρων τὸν λόγον), without any further clarification. Matthew, chapter 13:19 was more explicit with the seeds as the word of the kingdom (τὸν λόγον τῆς βασιλείας). Luke, chapter 8:11, was ever more specific when he explicitly said that seed was the word of God (τὸν λόγον τοῦ Θεοῦ). Mark said that the sower (ὁ σπείρων), either Jesus or his apostles, was sowing the word (τὸν λόγον σπείρει), the word of the kingdom, or the word of God into good ground, so that it might bear fruit.