After these things Jesus showed himself again to the disciples at the sea of Tiberias; and in this way showed he himself.
All Commentaries on John 21:1 Go To John 21
Gregory The Dialogist
AD 604
It may be asked, why Peter, who was a fisherman before his conversion, returned to fishing, when it is said, No man putting his hand to the plow, and looking back, is fit for the kingdom of God.
The craft which was exercised without sin before conversion, was no sin after it. Wherefore after his conversion Peter returned to fishing; but Mat thew sat not down again for the receipt? of custom. For there are some businesses which cannot or it can hardly be carried on without sin; and these cannot be returned to after conversion.
The fishing was made to be very unlucky, in order to raise their astonishment at the miracle after: And that night they caught nothing.
It may be asked, why after His resurrection He stood on the shore to receive the disciples, whereas before He walked on the sea? The sea signifies the world, which is tossed about with various causes of tumults, and the waves of this corruptible life; the shore by its solidity figures the rest eternal. The disciples then, inasmuch as they were still upon the waves of this mortal life, were laboring on the sea; but the Redeemer having by His resurrection thrown off the corruption of the flesh, stood upon the shore.
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, one hundred and fifty and three.
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.