And of every living thing of all flesh, two of every sort shall you bring into the ark, to keep them alive with you; they shall be male and female.
All Commentaries on Genesis 6:19 Go To Genesis 6
George Leo Haydock
Two, intended for the propagation of their kind. God afterwards specifies what more Noe should preserve for food, chap. vii. 2. (Calmet).
Wild beasts forgot their savage nature, and became subject to the just Noe; and all came readily at his beck, in the same manner as domestic animals come when we offer them food. Yet, in all this we must acknowledge the work of God, and a sort of miracle. (Haydock)