Mark 4:1

(Hom. in Matt. 44) Which we must understand was not done without a purpose, but that He might not leave any one behind Him, but have all His hearers before His face.

And again he began to teach by the sea. If we look at the Gospel of Matthew, it is clear that this teaching of the Lord by the sea took place on the same day as the previous sermon celebrated in the house. For when that sermon was finished, Matthew immediately added, saying: On that day Jesus went out of the house and sat by the sea, and large crowds gathered around him, etc. (Matthew XIII). Not only the deeds and words of the Lord, but also the journeys and places where he performs miracles and preaches, are full of heavenly mysteries. After giving a sermon in a house, where he was said to have a demon, he began to teach by the sea, to show that, having abandoned Judea because of the fault of unbelief, he would go to save the Gentiles. Indeed, the proud and unbelieving hearts of the Gentiles are rightly likened to the swollen and bitter waves of the sea. Who does not know that the house of the Lord was an unbelieving Judea? But, having left the house in which he suffered the blasphemies of the wicked, he began to teach by the sea, because, having abandoned the Synagogue due to its unbelief, he came to gather the multitude of the Gentile people through the apostles. Hence it is aptly first put forward that while he was preaching in the house, his mother and brothers stood outside and were not recognized by him, and thus, leaving the house, he went to teach by the sea, because after the Synagogue fixed itself firmly outside on the preservation of the letter and preferred to put the figures of the law before the inner secrets of the faith of the Lord, the Lord conferred the sacraments of salvation, which it had rejected, to the foreign nations throughout the world.

(in Marc. i. 18) For if we look into the Gospel of Matthew, it appears that this same teaching of the Lord at the sea, was delivered on the same day as the former. For after the conclusion of the first sermon, Matthew immediately subjoins, saying, The same day went Jesus out of the house, and sat by the sea-side.

(ubi sup.) After leaving the house also, He began to teach at the sea, because, quitting the synagogue, He came to gather together the multitude of the Gentile people by the Apostles. Wherefore it continues: And there was gathered unto him a great multitude, so that he entered into a ship, and sat in the sea.

And a great crowd gathered to him, so that he got into a boat and sat in the sea, and the whole crowd was on the land by the sea; and he taught them many things in parables. The fact that a great crowd gathered to the Lord while he was teaching by the sea signifies the multitude of people flocking to the faith of truth through the preaching of the apostles. But the fact that he got into a boat and sat in the sea prefigured the Church to be built among the nations that were unbelieving and contradictory. For it is as if the Lord sits in the boat placed in the middle of the sea, when he enlightens the minds of the faithful, who dwell among the faithful, with the grace of his visitation, and consecrates his beloved dwelling among them. Furthermore, the crowd which was on the land by the sea, listening to the words of the Lord, such that they were neither touched by the waves of the sea nor sitting with him in the boat above the waves, most aptly represents those who have recently gathered to hear the word. Indeed, they are separated by the piety of their minds from the bitterness, obscurity, and instability of the reprobate, but they are still not yet imbued with the heavenly mysteries they desire.

Now this ship showed in a figure the Church, to be built in the midst of the nations, in which the Lord consecrates for Himself a beloved dwelling-place. It goes on: And he taught them many things by parables.

Though He seemed to have sent His Mother away, He nevertheless obeys Her again, for on account of Her He goes out to the sea. He sits in a boat so that, having everyone before His eyes, He might speak within the hearing of all and have no one behind Him.

Although the Lord appears in the transactions mentioned above to neglect His mother, nevertheless He honours her; since on her account He goes forth about the borders of the sea: wherefore it is said, And Jesus began to teach again by the sea-side, &c.

But He began to teach at the sea, that the place of His teaching might point out the bitter feelings and instability of His hearers.