A guy named Peter knew how to fish. That was his trade, his livelihood. When it came to catching fish, he was the expert.
Peter’s buddy Jesus was a carpenter by trade. He knew how to make things with his hands, things constructed of wood. He was an expert at woodworking.
So when the professional fisherman didn’t catch a thing, it seems strange for the professional carpenter to offer him fishing advice.
But that’s exactly what Jesus did to Peter, the novice told the expert what to do.
It would have been entirely reasonable for Peter to dismiss Jesus, after all, Peter had been fishing his entire life; Jesus had not.
Yet Peter set aside his pride and disregarded his experience, agreeing to do what Jesus said, just “because you say so.”
Sometimes what God tells us to do seems foolish, sometimes we know better and want to ignore his advice. But if we are truly wise we will do it anyway, just because he says so.