In the parable, however, the dragnet represents the final event in the life of the earth and its rational inhabitants. Then eternal righteousness will forever separate the good from the evil, and earthly life in its present form will cease forever.
The two signs of the catch of fish, given by the Lord at the beginning of His ministry and after His Resurrection on the Lake of Galilee, concern the present life of men on earth. They are closely connected, though not identical in circumstance or inward meaning.
The first catch of fish on the Lake of Galilee, or Gennesaret, occurred when the Lord was in Simon’s boat; see Lk 5:1-11. It filled Simon with dread, and he said to the Lord: “Depart from me, O Lord, for I am a sinful man.”
Then the Lord said to him: “Do not fear; from now on you will catch men.” This first catch of fish, by the Lord’s command, signified the Church of God being built.
The Lord Himself is still in the boat upon the sea. The boats, filled with fish, are in danger; see Lk 5:7. The fishermen are afraid, but afterward, at the Lord’s word, they leave everything and follow the Lord.
In the catch of the present chapter of John, after the Lord’s Resurrection, He is not on the sea, in the boat, among the disciples. He is on the shore and calls them to Himself.
The disciples are alone on the sea of life. Yet, strong by His word, they cast the net, catch a multitude of fish, and draw them to the shore, to a safe place.
During the night, which signifies the time preceding the Lord’s appearance, their fishing was fruitless. Only the life-giving word of the Lord gives strength and fruitfulness to their labors.
Peter throws himself into the sea in order to reach more quickly the shore where the Lord is. This signifies “by what death Peter would glorify God” (Jn 21:19).
John remains in the boat, quietly sailing toward the same shore where the Lord stands. Until his own arrival at the shore, he drags the net in which the caught fish are enclosed.
The first catch on the Lake of Galilee signifies the beginning of that great work whose completion we see figuratively in the second catch. This is the work of preaching the Gospel and saving the human race.
It begins during the Lord’s ministry on earth and continues after His Resurrection. In this latter catch we see the activity of the fully established Church of Christ.
She draws souls saved from the sea of life to the feet of the Savior, who awaits them with love.
The number of fish caught in the net also held the attention of religious thinkers. Thus St. Cyril of Alexandria, and after him Blessed Theophylact of Bulgaria, point out that the number 153, resolved into three elements, 100 + 50 + 3, has symbolic meaning.
The number one hundred signifies the fullness of the Gentile world, which was the most numerous in the Lord’s time. Moreover, the Lord Himself used the number one hundred in the parables to express fullness.
It gives the idea of the whole, of everything, as for example in the parable of the hundred sheep in Mt 18:2. The number fifty represents that remnant of Israel which, according to the prophet’s expression, will be saved; see Is 10:22 and Rom 9:27.
The number three is the sanctification of the preceding numbers. It is the sacred number of the Holy Trinity, by whose power salvation is accomplished.
The Latin Fathers of the Church, Blessed Augustine and Gregory the Dialogist, pope of Rome, go still further in their symbolism of the number 153.
St. Augustine says that ten is the number of the law. Seven is the number of the gifts of the Holy Spirit, without whose grace the law does not give life, but kills. The number 10 + 7 = 17 gives life.
Augustine says that the sum of the series of numbers from one to seventeen is precisely 153. Thus this number is the symbol of all those who have been counted worthy of salvation.
Gregory the Dialogist, pope of Rome, develops Blessed Augustine’s thought further. Life in the Old Testament was entirely governed by the Ten Commandments. Life in the New Testament is governed by the seven gifts of the Holy Spirit.
Therefore the whole life and activity of men is governed by the numbers 10 + 7 = 17. But our life and activity are sanctified only by faith in the Holy Trinity.
Seventeen multiplied by three gives the number fifty-one. This represents the rest of the jubilee year (Lev 25:8-12), which is attained even in this present life by souls devoted to God.
Multiplying this number fifty-one again by three, the number of the Most Holy Trinity, we obtain the number 153. It expresses the immeasurable sum, known only to God, of souls that have attained and will attain eternal blessedness.
Such is the symbolism of the number 153, according to pious religious thinkers. Yet most important of all is the meaning of the catch itself, as a symbol and prophecy concerning the Church of Christ being established.