Genesis 6:19

19. Two of every sort From this statement, repeated in the next verse, as well as from that made in Genesis 7:15-16, it would be understood that only a pair of the animals were to be preserved; but from Genesis 7:2-3, we see that the clean beasts and fowls went into the ark by seven pairs. Animals instinctively foresee great natural convulsions or earthquakes, volcanic eruptions and tornadoes, and often, on such occasions, quite subdued by fear, seek human protection. It is natural to suppose that there would have been in the earth, atmosphere, and clouds fearful premonitions of this unparalleled convulsion, which lasted through forty days, and which is described as opening the windows of heaven and breaking up “the fountains of the great deep.” Beasts and birds of all kinds, that is, of all the species in that region, affrighted by these signs of the coming tempest, and tamed by their fears, may be reasonably believed to have gathered around or settled on the vast ark, during the few days before the deluge actually began. From these Noah selected twos or sevens of each kind. Instinct was thus providentially (we need not say miraculously) made the means of their preservation.

Shalt thou bring They came unto Noah, (Genesis 5:20,) and he caused them to come (for this is the true idea of the word rendered bring) into the ark .