Genesis 1:20 - Clarke's commentary and critical notes on the Bible

And God said, Let the waters bring forth abundantly the moving creature that hath life, and fowl that may fly above the earth in the open firmament of heaven. Let the waters bring forth abundantly - There is a meaning in these words which is seldom noticed. Innumerable millions of animalcula are found in water. Eminent naturalists have discovered not less than 30,000 in a single drop! How inconceivably small must each be, and yet each a perfect animal, furnished with the whole apparatus of bones, muscles, nerves, heart, arteries, veins, lungs, viscera in general, animal spirits, etc., etc. What a proof is this of the manifold wisdom of God! But the fecundity of fishes is another point intended in the text; no creature's are so prolific as these. A Tench lay 1,000 eggs, a Carp 20,000, and Leuwenhoek counted in a middling sized Cod 9,384,000! Thus, according to the purpose of God, the waters bring forth abundantly. And what a merciful provision is this for the necessities of man! Many hundreds of thousands of the earth's inhabitants live for a great part of the year on fish only. Fish afford, not only a wholesome, but a very nutritive diet; they are liable to few diseases, and generally come in vast quantities to our shores when in their greatest perfection. In this also we may see that the kind providence of God goes hand in hand with his creating energy. While he manifests his wisdom and his power, he is making a permanent provision for the sustenance of man through all his generations.