What does Genesis 8:19 mean?
Finally, after a full year aboard the ark, all the animals—wild animals, creeping things, birds, everything that moves—left the ark together in an orderly fashion. Note that, while the animals were specifically said to have entered in pairs (Genesis 6:19–20; 7:8–9), this verse simply says that the animals went out "by families." No mention is made of pairs here, and "families" were not mentioned when the ark was being filled. While the text itself does not say so explicitly, it is all but certain that many of the pairs of animals reproduced during the voyage. These creatures are now setting foot on the remade earth as a larger family groupings.Also clear in this verse is the supernatural influence of God. Animals simply don't co-exist in an orderly fashion like this. Noah was not an expert in taming wild beasts. The only way these animals could have entered, survived together, and exited the ark was through the direct intervention of God for the sake of saving each kind of animal that was saved.