For by seed here He means His doctrine, and by land, the souls of men, and by the sower, Himself .... For as the sower makes no distinction in the land submitted to him, but simply and indifferently casts his seed; so He Himself too makes no distinction of rich and poor, of wise and unwise, of slothful or diligent, of brave or cowardly; but He discourses unto all, fulfilling His part, although foreknowing the results.
-St. John Chrysostom, Homily 44 on Matthew 12, 4th Century