On Luke 5:1-11 (for this Gospel reading, please click here.)
Since the Lord bestowed health upon so many, no matter what their disease, neither time nor place could keep back the multitude of those who wished to be healed.
Evening fell, and still they followed him; he came to the borders of the lake, and still they pressed on; therefore, the Lord went up into Peter’s boat. This is the ship which, according to Matthew, is still tossing about in the sea, but according to Luke it is filled with fishes.
From this we learn how in the beginning the Church was tossed about by storms, but afterwards was filled to overflowing. The fish signify men swimming through the waters of this life. In the ship of Matthew, Christ sleeps in the midst of his disciples, in the ship of Luke he gives commands; for he sleeps with the lukewarm, but watches with the perfect.
– St Ambrose, Bishop, Book 4 on Luke, Ch. 5, from: An Approved English Translation of the Breviarium Romanum, Burns & Oates, London, 1964