Catena Aurea on Mark 4:1–20: Theophylact of Ohrid

And in order to rouse the attention of those who heard, the first parable that He proposes is concerning the seed, which is the word of God.

Wherefore it goes on, “And He said to them in His doctrine.”

Not in that of Moses, nor of the Prophets, because He preaches His own Gospel.

“Hearken: behold, there went out a sower to sow.”

Now the Sower is Christ.