The sea-side - This was the Sea of Tiberias. The multitude stood on the shore near to him, so that he could be easily heard. He went into a ship - that is, a boat; and sat down to address them. Few spectacles could be more interesting than a vast crowd on the hanks of a smooth and tranquil sea - an emblem of his instructions - and the Son of God addressing them on the great interests of eternity.
Related Commentaries of Matthew 13:1
Matthew 13:1-2
1 The same day went Jesus out of the house, and sat by the sea side.
2 And great multitudes were gathered together unto him, so that he went into a ship, and sat; and the whole multitude stood on the shore.