John Calvin Commentary Luke 5:6

"And when they had done this, they inclosed a great multitude of fishes; and their nets were breaking;" — Luke 5:6 (ASV)

They enclosed a great multitude of fishes. The design of the miracle undoubtedly was to make known Christ’s divinity, and thus to induce Peter and others to become his disciples. But we may draw from this instance a general instruction, that we have no reason to be afraid that our labor will not be attended by the blessing of God and desirable success when it is undertaken by the authority and guidance of Christ. Such was the multitude of fishes, that the ships were sinking, and the minds of the spectators were thus stirred to admiration: for it must have been because of the divine glory of Christ manifested by this miracle that his authority was fully acknowledged.