There go the ships: there is that leviathan, whom thou hast made to play therein. There go the ships - By means of navigation, countries the most remote are connected, and all the inhabitants of the earth become known to each other. He appears at this time to have seen the ships under sail.
That leviathan - This may mean the whale, or any of the large marine animals. The Septuagint and Vulgate call it dragon. Sometimes the crocodile is intended by the original word.
To play therein - Dreadful and tempestuous as the sea may appear, and uncontrollable in its billows and surges, it is only the field of sport, the play-ground, the bowling-green to those huge marine monsters.