Jamieson, Fausset and Brown on Matthew 13:2

2. And great multitudes were gathered together unto him, so that he went into a ship--the article in the received text lacks authority

and sat; and the whole multitude stood on the shore--How graphic this picture!--no doubt from the pen of an eye-witness, himself impressed with the scene. It was "the same day" on which the foregoing solemn discourse was delivered, when His kindred thought Him "beside Himself" for His indifference to food and repose--that same day retiring to the seashore of Galilee; and there seating Himself, perhaps for coolness and rest, the crowds again flock around Him, and He is fain to push off from them, in the boat usually kept in readiness for Him; yet only to begin, without waiting to rest, a new course of teaching by parables to the eager multitudes that lined the shore. To the parables of our Lord there is nothing in all language to be compared, for simplicity, grace, fulness, and variety of spiritual teaching. They are adapted to all classes and stages of advancement, being understood by each according to the measure of his spiritual capacity.