Augustine of Hippo
Catena Aurea · Lukasevangelium 5
Now when he had left speaking, he said unto Simon, Launch out into the deep, and let down your nets for a draught. And Simon answering said unto him, Master, we have toiled all the night, and have taken nothing: nevertheless at thy word I will let down the net. And when they had this done, they inclosed a great multitude of fishes: and their net brake. And they beckoned unto their partners, which were in the other ship, that they should come and help them. And they came, and filled both the ships, so that they began to sink.
(ut sup.) Now the circumstance of the nets breaking, and the ships being filled with the multitude of fishes so that they began to sink, signifies that there will be in the Church so great a multitude of carnal men, that unity will be broken up, and it will be split into heresies and schisms.