But then...Luke says, “When they had done so, they caught such a large number of fish that their nets began to break.” Not the kind of break Peter had in mind. Not the kind of outcome he had in mind either. Have you ever reached to lift something -- a milk jug, perhaps -- and you think it’s full. You think it’s heavy. But it’s not. And you almost throw it to the ceiling.
Reverse that. You throw the nets over the side of the boat. You’re sure nothing will happen. So you give no resistance. And the draught of fish is so great, the nets become so heavy, so suddenly, that you’re almost pulled overboard.