And four great beasts came up from the sea
Which are afterwards interpreted of four kings or kingdoms, ( Daniel 7:17 ) , which rose up in the world, not at once, but successively, and out of the sea or world, through the commotions and agitations of it; and these are the four monarchies, Babylonian, Persian, Grecian, and Roman; compared to "beasts", because of the rapine and violence, cruelty, oppression, and tyranny, by which they were obtained, set up, supported, and maintained; and to "great ones", being not like single separate kingdoms, as the kingdom of Israel, and the like, but consisting of many kingdoms and nations, and so like beasts of an enormous size: diverse one from another;
in their situation, language, manner, strength, and power; hence expressed by divers sorts of beasts, as the lion, bear, leopard; as in Nebuchadnezzar's dream by different metals, gold, silver, brass, and iron.