John 21:11

Peter drags the dragnet with the others, bringing the catch to Christ. The hundred can be understood to mean the fullness of the Gentiles. The fifty refers to the elect of Israel who have been saved. And the three set one's mind on the revelation of the holy Trinity, to whose glory the life of the believers who were caught in the dragnet is naturally connected.

To Peter was the holy Church committed; to him is it specially said, Feed My sheep. That then which is afterwards declared by word, is now signified by act. He it is who draws the fishes to the firm shore, because he it was who pointed out the stability of the eternal country to the faithful. This he did by word of mouth, by epistles; this he does daily by signs and miracles. After saying that the net was full of great fishes, the number follows: Full of great fishes, an hundred and fifty and three. (Hom. xxiv.) Seven and ten multiplied by three make fifty-one. The fiftieth year was a year of rest to the whole people from all their work. In unity is true rest; for where division is, true rest cannot be.

For if we determine on the number that should indicate the law, what else can it be but ten? For we have absolute certainty that the Decalogue of the law, that is, those ten well-known precepts, were first written by the finger of God on two tables of stone. But the law, when it is not aided by grace, maketh transgressors, and is only in the letter, on account of which the apostle specially declared, "The letter killeth, but the spirit giveth life." Let the spirit then be added to the letter, lest the letter kill him whom the spirit maketh not alive, and let us work out the precepts of the law, not in our own strength, but by the grace of the Saviour. But when grace is added to the law, that is, the spirit to the letter, there is, in a kind of way, added to ten the number of seven. For this number, namely seven, is testified by the documents of holy writ given us for perusal, to signify the Holy Spirit. Accordingly, when to the number of ten, representing the law, we add the Holy Spirit as represented by seven, we have seventeen; and when this number is used for the adding together of every several number it contains, from 1 up to itself, the sum amounts to one hundred and fifty-three. But it is not on that account merely a hundred and fifty-three saints that are meant as hereafter to rise from the dead unto life eternal, but thousands of saints who have shared in the grace of the Spirit, by which grace harmony is established with the law of God, as with an adversary; so that through the life-giving Spirit the letter no longer kills, but what is commanded by the letter is fulfilled by the help of the Spirit, and if there is any deficiency it is pardoned.