Thus was he fair in his greatness,.... Amiable, lovely, delightful to look upon in the greatness of his majesty, in his royal glory and dignity:

in the length of his branches; in the extent of his empire, and the provinces of it:

for his root was by great waters; his kingdom was well established, firmly rooted among a multitude of people; from whom he had a large revenue to support his throne and government, and the dignity of it; by tribute, taxes, customs, and presents; and through the large trade and traffic of his subjects in different parts, from whence he received great profit and advantage. The Targum is,

"and he became victorious by his auxiliaries, by the multitude of his mighty ones, so that his terror was upon many people.''

Thus was he fair in his greatness, in the length of his branches: for his root was by great waters.

31:1-9 The falls of others, both into sin and ruin, warn us not to be secure or high-minded. The prophet is to show an instance of one whom the king of Egypt resembled in greatness, the Assyrian, compared to a stately cedar. Those who excel others, make themselves the objects of envy; but the blessings of the heavenly paradise are not liable to such alloy. The utmost security that any creature can give, is but like the shadow of a tree, a scanty and slender protection. But let us flee to God for protection, there we shall be safe. His hand must be owned in the rising of the great men of the earth, and we must not envy them. Though worldly people may seem to have firm prosperity, yet it only seems so.