Adam Clarke Bible Commentary

And they went in, etc. - It was physically impossible for Noah to have collected such a vast number of tame and ferocious animals, nor could they have been retained in their wards by mere natural means. How then were they brought from various distances to the ark and preserved there? Only by the power of God. He who first miraculously brought them to Adam that he might give them their names, now brings them to Noah that he may preserve their lives. And now we may reasonably suppose that their natural enmity was so far removed or suspended that the lion might dwell with the lamb, and the wolf lie down with the kid, though each might still require his peculiar aliment. This can be no difficulty to the power of God, without the immediate interposition of which neither the deluge nor the concomitant circumstances could have taken place.