Behold, he spreadeth his light upon it, and covereth the bottom of the sea.
Ver. 30. Behold, he spreadeth his light upon it] That is, his fair weather, clearing up the cloudy sky, as some expound it; or, as others, his lightning shot forth every way, Psalms 18:13; Psalms 18:15; Psalms 144:6. Or the sunbeams spread upon the sea, and drawing up vapours; unde mare hoc loco nubium radix dicitur, saith Brentius, whence the sea is here called the root of the clouds; or the surface of the sea is called the root of it, in regard to the wandering waves which are cut in asunder, after the manner of roots; so saith Vatablus. Those that by light here understand lightnings, say, that God maketh them dart so abundantly through the waters of the sea, that they do, as it were, cover all the bottom of it.