'Simon answered him, Master, we have toiled all the night, and caught nothing.' A reasonable enough reply. The night hours were their normal time for fishing, and this time the catch had yielded nothing. What was the point of fishing by day? But Peter has faith: 'nevertheless, at your word I will let down the net.' He decides to act on Christ's suggestion. He undertakes to work relying entirely on the Word of Our Lord. And what happened? 'When they had done this, they took a great quantity of fish, so that the net was near breaking, and they must needs beckon to their partners who were in the other boat to come and help them. When these came, they filled both boats, so that they were ready to sink.'
When Jesus went out to sea with his disciples he was not thinking only about the catch of fishes. And so when Peter falls down at his feet and humbly confesses: 'Depart from me, Lord, for I am a sinful man,' Our Lord replies: 'Do not be afraid; henceforth you shall be a fisher of men.' In this new task of fishing, all the power and effectiveness of God will also be at hand: the apostles are instruments for the working of great wonders, in spite of their personal shortcomings.