Adam Clarke on Luke 5:3

And taught - out of the ship - They pressed so much upon him on the land, through their eagerness to hear the doctrine of life, that he could not conveniently speak to them, and so was obliged to get into one of the boats; and, having pushed a little out from the land, he taught them. The smooth still water of the lake must have served excellently to convey the sounds to those who stood on the shore;