20 And God said, Let the waters swarm with swarms of living souls, and let fowl fly above the earth in the expanse of the heavens. 21 And God created the great sea monsters, and every living soul that moves with which the waters swarm, after their kind, and every winged fowl after its kind. And God saw that it was good. 22 And God blessed them, saying, Be fruitful and multiply, and fill the waters in the seas, and let fowl multiply on the earth. 23 And there was evening, and there was morning—a fifth day.
Matthew Henry's Commentary on Genesis 1:20-23
Commentary on Genesis 1:20-25
(Read Genesis 1:20-25)
God commanded the fish and fowl to be produced. This command he himself executed. Insects, which are more numerous than the birds and beasts, and as curious, seem to have been part of this day's work. The Creator's wisdom and power are to be admired as much in an ant as in an elephant. The power of God's providence preserves all things, and fruitfulness is the effect of his blessing.